Where Is Area Code 630? Communities west of Chicago in northeastern Illinois fall under both the 630 and 331 area codes in Illinois. 630 is an Illinois area code that includes the cities of Naperville, Aurora, Wheaton and Bolingbrook. Parts of western Chicago’s suburbs fall within area codes 630 and 331 in the United States North American Numbering Plan.
Area Code 630 History
-
On August 3, 1996, area code 630 was split from area code 708. The southern suburbs kept area code 708, and the northern suburbs got area code 847. Within a decade, cell phones and pagers became popular, and the Chicago suburbs proliferated that 630 was almost complete.
-
On October 7, 2007, area code 331 took over area code 630, making it necessary to use ten digits when calling from that area.
-
The Illinois side of the Chicago area, which includes 312/773/872, 708, 847/224, 630/331, and parts of 815/779, is one of the largest local calling areas in the United States. With a few exceptions, there are no long-distance charges from one part of the metro area to another.
What area code is 630 in Florida?
The 630 area code serves Northern Illinois, including the cities of Naperville, Aurora, Wheaton, and Bolingbrook.
Research and Technology Corridor in Illinois
This area code includes the Illinois Technology and Research Corridor, noted for R&D, logistics, and technology. This neighbourhood is a key economic hub and home to various global firms.
| List | Name |
|---|---|
| 1 | Facilities for industrial usage |
| 2 | Medical centers |
| 3 | Government offices |
| 4 | Plenty of retail establishments |
| 5 | Dining |
| 6 | Entertainment |
| 7 | Options for Overnight Stays |
Area Code 630 History
On August 3, 1996, area code 630 was split from area code 708. The southern suburbs kept area code 708, and the northern suburbs got area code 847. Within a decade, cell phones and pagers became popular, and the Chicago suburbs proliferated that 630 was almost complete.
On October 7, 2007, area code 331 took over area code 630, making it necessary to use ten digits when calling from that area.
The Illinois side of the Chicago area, which includes 312/773/872, 708, 847/224, 630/331, and parts of 815/779, is one of the largest local calling areas in the United States. With a few exceptions, there are no long-distance charges from one part of the metro area to another.
What area code is 630 in Florida?
The 630 area code serves Northern Illinois, including the cities of Naperville, Aurora, Wheaton, and Bolingbrook.
Research and Technology Corridor in Illinois
This area code includes the Illinois Technology and Research Corridor, noted for R&D, logistics, and technology. This neighbourhood is a key economic hub and home to various global firms.
| List | Name |
|---|---|
| 1 | Facilities for industrial usage |
| 2 | Medical centers |
| 3 | Government offices |
| 4 | Plenty of retail establishments |
| 5 | Dining |
| 6 | Entertainment |
| 7 | Options for Overnight Stays |
Naperville and Aurora
Aurora (pop. 199,963) and Naperville (pop. 144,864) share a rich history of industry and prominent monuments with neighbouring Chicago suburbs.
These factors have attracted company owners searching for cool, affordable areas to trade.
Other Locations
Here are a few more locations where the area code is 630.
| Number | Name |
|---|---|
| 1 | Addison |
| 2 | Bartlett |
| 3 | Batavia |
| 4 | Bensenville |
| 5 | Big Rock |
| 6 | Downers Grove |
| 7 | Elburn |
| 8 | Geneva |
| 9 | Glen Ellyn |
| 10 | Hinsdale |
| 11 | Itasca |
| 12 | Kaneville |
| 13 | La Grange |
| 14 | Lemont |
| 15 | Lombard |
| 16 | NorthbrooK |
| 17 | Oswego |
| 18 | Plano |
| 19 | Roselle |
| 20 | Saint Charles |
Nearby area codes include 847 and 224 in the north, 773 around Chicago, 312 in Chicago, 708, and 815 in northern Illinois. If you want to go beyond 630, RingCentral provides toll-free numbers. Choose a phone number using the tool above to begin.
Summary:
The southern suburbs kept 708, while the northern suburbs became 847 on August 3, 1996. Due to the development of Chicago’s suburbs and mobile phones and pagers, 630 was almost exhausted within a decade. On October 7, 2007, area code 331 merged with 630, requiring ten-digit dialing.
What Is an Area Code?
One way to identify a phone number’s location inside the U. S. is by looking at its area code. Based on the most recent data from the North American Numeration Plan, the United States has somewhere around 320 unique area codes (when overlays are considered) (NANP).
Area codes 815 and 779 are telephone area codes for most of northern Illinois outside the Chicago and Quad Cities areas. As well as Joliet, it reaches out to parts of Chicago’s northern and western suburbs.
The 630 area code is located in the Central timezone. America/Chicago is another name for the time zone Central.
GMT is the standard time of a country. It is mainly used by British subsidiaries such as the BBC World Service, the Royal Navy, and the Met Office. Several countries are introducing GMT into their legislation. These are the United Kingdom, Belgium, Ireland, and Canada.
Here are the following points for the set timezone automatically given below.
-
Click on the time interval at the bottom right corner of the screen, and then you will see a calendar; then click on the link titled Date.
-
You will see this interface; make sure the timing switch is activated automatically.
-
Locate the Set time zone automatically, switch and turn it on.
Summary:
Phone numbers in the U. S. are assigned an area code to designate their geographic location. There are around 320 area codes in the USA, according to the American North Numbering Plan. The 630 area code is located in the Central timezone, also known as America/Chicago.
Purpose of Area Code
Because of these area codes, long-distance calls may be made without a human operator. There weren’t enough human operators to handle the rising population, therefore area codes were implemented.
They can make you feel like you’re back home if you take your old area code to a new place. Most people don’t change their area codes when they move. Getting a unique local number, like landlines and dial-up internet, is a thing of the past. Your area code could also signify how well off you are.
Area codes 630 and 331 encompass Chicago’s close and far western suburbs under the North American numbering grid. They encompass most of Illinois’ Dupage County.
Parts of Schaumburg, Streamwood, and Hanover Park in adjacent Cook County are also included.
Northwest of Chicago, area codes serve Schaumburg, Streamwood, and Hanover Park. In the west, Kane County has area codes 847 and 224 in Elgin and 630 and 331 in Aurora.
All NPAs in the Illinois 630 and 331 area codes as part of the United States American North numbering plan cover portions of the near and far western suburbs of Chicago, including most of Dupage County, Illinois.
Southeast Pennsylvania outside of Philadelphia, including Lehigh Valley, but excluding all of Bucks County, excluding the northernmost and eastern half of Montgomery counties. 717 Harrisburg, Lancaster, and York, all in south-central Pennsylvania.
In 1947, Pennsylvania had four area codes: 215, 412, 717, and 814. In 1995, 610 was added, and since then, there have been several other splits and additions. The 835 area code comes as an additional overlay with 610. v. That is, North American city code lists with dial plans.
ISO 31661 Numeric Codes (or number 3) are three-digit country codes defined in ISO 31661, part of ISO 3166 published by the International Organization for Standardization (ISO), to identify countries, dependent territories, and areas of particular geographical importance.
How to Change Your Area Code?
There are the following guidelines to change your area code.
-
Learn your phone’s ESN (electric serial number).
-
Contact your wireless provider’s customer service department.
-
Just give the ESN to a salesperson and explain that you want to alter your area code.
Summary:
America/Chicago is the Central time zone. A country’s GMT. BBC World Service, the Royal Navy, and the Met Office utilize it. These area codes automated phone calls without a human operator.
Other Locations
Here are a few more locations where the area code is 630.
| Number | Name |
|---|---|
| 1 | Addison |
| 2 | Bartlett |
| 3 | Batavia |
| 4 | Bensenville |
| 5 | Big Rock |
| 6 | Downers Grove |
| 7 | Elburn |
| 8 | Geneva |
| 9 | Glen Ellyn |
| 10 | Hinsdale |
| 11 | Itasca |
| 12 | Kaneville |
| 13 | La Grange |
| 14 | Lemont |
| 15 | Lombard |
| 16 | NorthbrooK |
| 17 | Oswego |
| 18 | Plano |
| 19 | Roselle |
| 20 | Saint Charles |
Nearby area codes include 847 and 224 in the north, 773 around Chicago, 312 in Chicago, 708, and 815 in northern Illinois. If you want to go beyond 630, RingCentral provides toll-free numbers. Choose a phone number using the tool above to begin.
Summary:
The southern suburbs kept 708, while the northern suburbs became 847 on August 3, 1996. Due to the development of Chicago’s suburbs and mobile phones and pagers, 630 was almost exhausted within a decade. On October 7, 2007, area code 331 merged with 630, requiring ten-digit dialing.
What Is an Area Code?
One way to identify a phone number’s location inside the U. S. is by looking at its area code. Based on the most recent data from the North American Numeration Plan, the United States has somewhere around 320 unique area codes (when overlays are considered) (NANP).
Area codes 815 and 779 are telephone area codes for most of northern Illinois outside the Chicago and Quad Cities areas. As well as Joliet, it reaches out to parts of Chicago’s northern and western suburbs.
The 630 area code is located in the Central timezone. America/Chicago is another name for the time zone Central.
GMT is the standard time of a country. It is mainly used by British subsidiaries such as the BBC World Service, the Royal Navy, and the Met Office. Several countries are introducing GMT into their legislation. These are the United Kingdom, Belgium, Ireland, and Canada.
Here are the following points for the set timezone automatically given below.
-
Click on the time interval at the bottom right corner of the screen, and then you will see a calendar; then click on the link titled Date.
-
You will see this interface; make sure the timing switch is activated automatically.
-
Locate the Set time zone automatically, switch and turn it on.
Summary:
Phone numbers in the U. S. are assigned an area code to designate their geographic location. There are around 320 area codes in the USA, according to the American North Numbering Plan. The 630 area code is located in the Central timezone, also known as America/Chicago.
Purpose of Area Code
Because of these area codes, long-distance calls may be made without a human operator. There weren’t enough human operators to handle the rising population, therefore area codes were implemented.
They can make you feel like you’re back home if you take your old area code to a new place. Most people don’t change their area codes when they move. Getting a unique local number, like landlines and dial-up internet, is a thing of the past. Your area code could also signify how well off you are.
Area codes 630 and 331 encompass Chicago’s close and far western suburbs under the North American numbering grid. They encompass most of Illinois’ Dupage County.
Parts of Schaumburg, Streamwood, and Hanover Park in adjacent Cook County are also included.
Northwest of Chicago, area codes serve Schaumburg, Streamwood, and Hanover Park. In the west, Kane County has area codes 847 and 224 in Elgin and 630 and 331 in Aurora.
All NPAs in the Illinois 630 and 331 area codes as part of the United States American North numbering plan cover portions of the near and far western suburbs of Chicago, including most of Dupage County, Illinois.
Southeast Pennsylvania outside of Philadelphia, including Lehigh Valley, but excluding all of Bucks County, excluding the northernmost and eastern half of Montgomery counties. 717 Harrisburg, Lancaster, and York, all in south-central Pennsylvania.
In 1947, Pennsylvania had four area codes: 215, 412, 717, and 814. In 1995, 610 was added, and since then, there have been several other splits and additions. The 835 area code comes as an additional overlay with 610. v. That is, North American city code lists with dial plans.
ISO 31661 Numeric Codes (or number 3) are three-digit country codes defined in ISO 31661, part of ISO 3166 published by the International Organization for Standardization (ISO), to identify countries, dependent territories, and areas of particular geographical importance.
How to Change Your Area Code?
There are the following guidelines to change your area code.
-
Learn your phone’s ESN (electric serial number).
-
Contact your wireless provider’s customer service department.
-
Just give the ESN to a salesperson and explain that you want to alter your area code.
Summary:
America/Chicago is the Central time zone. A country’s GMT. BBC World Service, the Royal Navy, and the Met Office utilize it. These area codes automated phone calls without a human operator.
Frequently Asked Questions: FAQs
Many questions are related to this topic, but a few are given below.
1 - What City Is the 630 Area Code?
The 630 area code in Illinois overlaps with the 331 area code, including many communities west of Chicago in northeastern Illinois. This area code is used by Aurora, Elmhurst, Naperville, and Wheaton.
2 - What County Is the 630 Area Code?
Area codes 630 and 331 under the North American Numbering Plan in the United States cover portions of Chicago’s near and far western suburbs, including most of DuPage County, Illinois.
3 - When Did the 630 Area Code Start?
Area codes 847 (northern suburbs) and 630 (western suburbs) were created from a split suburban area code 708 in 1996.
4 - What State Is Area Code Six One Two?
The towns of Richfield, Fort Tears, and St. Anthony are all included in the coverage area of the 612 area code, which is based in County in the middle of Minnesota.
5 - What Area Code Is 636?
Area 636 covers western St. Louis County and the whole of east-central Missouri. It stretches throughout all of Union, Washington, Troy, De Soto, St. Louis, and a chunk of Fenton and Chesterfield in St. Louis County.
6 - Can I Get the Number Who Free Called Me?
Free Services That Allow You to Track Down Who’s Been Calling You, CocoFinder. You’ll want to check out CocoFinder and its highly praised free reverse phone lookup feature.
-
Spokeo.
-
PeopleFinders.
-
Truecaller.
-
Spy Dialer.
-
CellRevealer.
-
Spytox.
-
ZLOOKUP.
7 - Why Is a Toll-Free Number Calling Me?
A toll-free call is one in which the caller is not charged for making the call. Instead, the callee is responsible for payment. Simply put, the call recipient gets charged for any long-distance calling fees instead of the person placing the call.
8 - What Are the Area Codes for Miami?
Telephone area codes 786 and 305 inside the North American Numeration Plan serve the city of Miami, Florida; Miami-Dade County; and Monroe County, Florida (including a portion of the Florida Keys). Area code 239 serves the function of Monroe County, which is on land.
9 - Where Can I Find the Area Code 631?
Inside the North American Numeration Plan (NANP), the county of Suffolk, which is located in New York on Long Island, is assigned the area codes 934 and 631 for its telephones. The 631 area code was split off from the 516 area code in 1999, and the 934 overlay was added in 2016.
10 - What State Has the Most Area Codes?
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Where Is Area Code 630? Communities west of Chicago in northeastern Illinois fall under both the 630 and 331 area codes in Illinois. 630 is an Illinois area code that includes the cities of Naperville, Aurora, Wheaton and Bolingbrook. Parts of western Chicago’s suburbs fall within area codes 630 and 331 in the United States North American Numbering Plan.
Area Code 630 History
On August 3, 1996, area code 630 was split from area code 708. The southern suburbs kept area code 708, and the northern suburbs got area code 847. Within a decade, cell phones and pagers became popular, and the Chicago suburbs proliferated that 630 was almost complete.
On October 7, 2007, area code 331 took over area code 630, making it necessary to use ten digits when calling from that area.
The Illinois side of the Chicago area, which includes 312/773/872, 708, 847/224, 630/331, and parts of 815/779, is one of the largest local calling areas in the United States. With a few exceptions, there are no long-distance charges from one part of the metro area to another.
What area code is 630 in Florida?
The 630 area code serves Northern Illinois, including the cities of Naperville, Aurora, Wheaton, and Bolingbrook.
Research and Technology Corridor in Illinois
This area code includes the Illinois Technology and Research Corridor, noted for R&D, logistics, and technology. This neighbourhood is a key economic hub and home to various global firms.
| List | Name |
|---|---|
| 1 | Facilities for industrial usage |
| 2 | Medical centers |
| 3 | Government offices |
| 4 | Plenty of retail establishments |
| 5 | Dining |
| 6 | Entertainment |
| 7 | Options for Overnight Stays |
Naperville and Aurora
Aurora (pop. 199,963) and Naperville (pop. 144,864) share a rich history of industry and prominent monuments with neighbouring Chicago suburbs.
These factors have attracted company owners searching for cool, affordable areas to trade.
Other Locations
Here are a few more locations where the area code is 630.
| Number | Name |
|---|---|
| 1 | Addison |
| 2 | Bartlett |
| 3 | Batavia |
| 4 | Bensenville |
| 5 | Big Rock |
| 6 | Downers Grove |
| 7 | Elburn |
| 8 | Geneva |
| 9 | Glen Ellyn |
| 10 | Hinsdale |
| 11 | Itasca |
| 12 | Kaneville |
| 13 | La Grange |
| 14 | Lemont |
| 15 | Lombard |
| 16 | NorthbrooK |
| 17 | Oswego |
| 18 | Plano |
| 19 | Roselle |
| 20 | Saint Charles |
Nearby area codes include 847 and 224 in the north, 773 around Chicago, 312 in Chicago, 708, and 815 in northern Illinois. If you want to go beyond 630, RingCentral provides toll-free numbers. Choose a phone number using the tool above to begin.
Summary:
The southern suburbs kept 708, while the northern suburbs became 847 on August 3, 1996. Due to the development of Chicago’s suburbs and mobile phones and pagers, 630 was almost exhausted within a decade. On October 7, 2007, area code 331 merged with 630, requiring ten-digit dialing.
What Is an Area Code?
One way to identify a phone number’s location inside the U. S. is by looking at its area code. Based on the most recent data from the North American Numeration Plan, the United States has somewhere around 320 unique area codes (when overlays are considered) (NANP).
Area codes 815 and 779 are telephone area codes for most of northern Illinois outside the Chicago and Quad Cities areas. As well as Joliet, it reaches out to parts of Chicago’s northern and western suburbs.
The 630 area code is located in the Central timezone. America/Chicago is another name for the time zone Central.
GMT is the standard time of a country. It is mainly used by British subsidiaries such as the BBC World Service, the Royal Navy, and the Met Office. Several countries are introducing GMT into their legislation. These are the United Kingdom, Belgium, Ireland, and Canada.
Here are the following points for the set timezone automatically given below.
-
Click on the time interval at the bottom right corner of the screen, and then you will see a calendar; then click on the link titled Date.
-
You will see this interface; make sure the timing switch is activated automatically.
-
Locate the Set time zone automatically, switch and turn it on.
Summary:
Phone numbers in the U. S. are assigned an area code to designate their geographic location. There are around 320 area codes in the USA, according to the American North Numbering Plan. The 630 area code is located in the Central timezone, also known as America/Chicago.
Purpose of Area Code
Because of these area codes, long-distance calls may be made without a human operator. There weren’t enough human operators to handle the rising population, therefore area codes were implemented.
They can make you feel like you’re back home if you take your old area code to a new place. Most people don’t change their area codes when they move. Getting a unique local number, like landlines and dial-up internet, is a thing of the past. Your area code could also signify how well off you are.
Area codes 630 and 331 encompass Chicago’s close and far western suburbs under the North American numbering grid. They encompass most of Illinois’ Dupage County.
Parts of Schaumburg, Streamwood, and Hanover Park in adjacent Cook County are also included.
Northwest of Chicago, area codes serve Schaumburg, Streamwood, and Hanover Park. In the west, Kane County has area codes 847 and 224 in Elgin and 630 and 331 in Aurora.
All NPAs in the Illinois 630 and 331 area codes as part of the United States American North numbering plan cover portions of the near and far western suburbs of Chicago, including most of Dupage County, Illinois.
Southeast Pennsylvania outside of Philadelphia, including Lehigh Valley, but excluding all of Bucks County, excluding the northernmost and eastern half of Montgomery counties. 717 Harrisburg, Lancaster, and York, all in south-central Pennsylvania.
In 1947, Pennsylvania had four area codes: 215, 412, 717, and 814. In 1995, 610 was added, and since then, there have been several other splits and additions. The 835 area code comes as an additional overlay with 610. v. That is, North American city code lists with dial plans.
ISO 31661 Numeric Codes (or number 3) are three-digit country codes defined in ISO 31661, part of ISO 3166 published by the International Organization for Standardization (ISO), to identify countries, dependent territories, and areas of particular geographical importance.
How to Change Your Area Code?
There are the following guidelines to change your area code.
-
Learn your phone’s ESN (electric serial number).
-
Contact your wireless provider’s customer service department.
-
Just give the ESN to a salesperson and explain that you want to alter your area code.
Summary:
America/Chicago is the Central time zone. A country’s GMT. BBC World Service, the Royal Navy, and the Met Office utilize it. These area codes automated phone calls without a human operator.
Frequently Asked Questions: FAQs
Many questions are related to this topic, but a few are given below.
1 - What City Is the 630 Area Code?
The 630 area code in Illinois overlaps with the 331 area code, including many communities west of Chicago in northeastern Illinois. This area code is used by Aurora, Elmhurst, Naperville, and Wheaton.
2 - What County Is the 630 Area Code?
Area codes 630 and 331 under the North American Numbering Plan in the United States cover portions of Chicago’s near and far western suburbs, including most of DuPage County, Illinois.
3 - When Did the 630 Area Code Start?
Area codes 847 (northern suburbs) and 630 (western suburbs) were created from a split suburban area code 708 in 1996.
4 - What State Is Area Code Six One Two?
The towns of Richfield, Fort Tears, and St. Anthony are all included in the coverage area of the 612 area code, which is based in County in the middle of Minnesota.
5 - What Area Code Is 636?
Area 636 covers western St. Louis County and the whole of east-central Missouri. It stretches throughout all of Union, Washington, Troy, De Soto, St. Louis, and a chunk of Fenton and Chesterfield in St. Louis County.
6 - Can I Get the Number Who Free Called Me?
Free Services That Allow You to Track Down Who’s Been Calling You, CocoFinder. You’ll want to check out CocoFinder****strong text and its highly praised free reverse phone lookup feature.
-
Spokeo.
-
PeopleFinders.
-
Truecaller.
-
Spy Dialer.
-
CellRevealer.
-
Spytox.
-
ZLOOKUP.
7 - Why Is a Toll-Free Number Calling Me?
A toll-free call is one in which the caller is not charged for making the call. Instead, the callee is responsible for payment. Simply put, the call recipient gets charged for any long-distance calling fees instead of the person placing the call.
8 - What Are the Area Codes for Miami?
Telephone area codes 786 and 305 inside the North American Numeration Plan serve the city of Miami, Florida; Miami-Dade County; and Monroe County, Florida (including a portion of the Florida Keys). Area code 239 serves the function of Monroe County, which is on land.
9 - Where Can I Find the Area Code 631?
Inside the North American Numeration Plan (NANP), the county of Suffolk, which is located in New York on Long Island, is assigned the area codes 934 and 631 for its telephones. The 631 area code was split off from the 516 area code in 1999, and the 934 overlay was added in 2016.
10 - What State Has the Most Area Codes?
The most popular area code in 2021 was 302, belonging to the entire state of Delaware. When looking at the top 15 most purchased area codes, California stands out as the state with the most.
11 - What Florida Area Code Is 617?
In the U.S. state of Massachusetts, area code 617 serves Boston and thirteen other cities and towns, such as Belmont, Cambridge, and Chelsea. It also helps some people in parts of Middlesex, Norfolk, and Suffolk counties.
12 - What Is the Area Code for 613?
The North American Numbering Plan (NANP) gives Ottawa and the rest of Eastern Ontario, Canada, the area codes 613 and 343. One of the first 86 area codes in North America, 613, was given in October 1947.
13 - Is It Free to Look Up a Phone Number on Google?
To use search “Google” as a free reverse number lookup tool, type the number with the area code (for example, “123-456-7890”) into the search bar, and press “Enter” or “Google Search.” Reverse lookup services may be among the first results, and many will ask you to pull out your credit card.
14 - Should I Pick Up the Phone?
Don’t pick up the phone when a number you don’t know rings. Hang up immediately if it’s not who you thought it would be. If a call seems suspicious, don’t give out personal information like account numbers, passwords, or Any information that could be used to identify you, such as social security numbers or your mother’s maiden name.
15 - Why Does a Come Before a Local Number?
With a cell phone, they can dial a plus sign. When dialing the international access code, you put a “+” in front of the number. For instance, if someone from the U.K. wanted to call you, they would dial the 00-1-area code number. From South Africa, they would dial the 09-1-area code number.
16 - What Florida Area Code Is 617?
In the U.S. state of Massachusetts, area code 617 serves Boston and thirteen other cities and towns, such as Belmont, Cambridge, and Chelsea. It also helps some people in parts of Middlesex, Norfolk, and Suffolk counties.
17 - What Is the Area Code for 613?
The North American Numbering Plan (NANP) gives Ottawa and the rest of Eastern Ontario, Canada, the area codes 613 and 343. One of the first 86 area codes in North America, 613, was given in October 1947.
18 - Is It Free to Look Up a Phone Number on Google?
To use search “Google” as a free reverse number lookup tool, type the number with the area code (for example, “123-456-7890”) into the search bar, and press “Enter” or “Google Search.” Reverse lookup services may be among the first results, and many will ask you to pull out your credit card.
19 - Should I Pick Up the Phone?
Don’t pick up the phone when a number you don’t know rings. Hang up immediately if it’s not who you thought it would be. If a call seems suspicious, don’t give out personal information like account numbers, passwords, or Any information that could be used to identify you, such as social security numbers or your mother’s maiden name.
20 - Why Does a Come Before a Local Number?
With a cell phone, they can dial a plus sign. When dialing the international access code, you put a “+” in front of the number. For instance, if someone from the U.K. wanted to call you, they would dial the 00-1-area code number. From South Africa, they would dial the 09-1-area code number.
Conclusion:
The 630 area code overlaps with 331 in northeastern Illinois, west of Chicago. It serves Aurora, Elmhurst, Naperville, and Wheaton. An area code indicates a phone number’s U.S. location. The North American Numbering Plan lists 320 area codes and overlays in the United States (NANP).