
Where is the 510 area code located?
The telephone area code 510 was created for the Eastern Bay Area cities of the state of California. 510 area code was established from a split of area code 415 on September 2, 1991. It was projected that area code 510 will be exhausted in 2019 so area code 341 was created as an overlay to area code 510 to serve the East Bay.
What state is the area code '505' from?
Area code 505 serves the state of New Mexico. This area code was assigned on January 1st, 1947. On January 1st, 1947 it went into service. 505 is a General Purpose Code. Dialing pattern for local calls within the same NPA (area code) is 7D. 365 Wireless, Llc American Messaging…
What cities are in the 505 area code?
The most populous cities in area code 505 are: Albuquerque, Santa Fe, Farmington, Gallup, and Los Alamos.
What time zone is area code 510?
Time zone. The 510 area code lies within the Pacific Time (PT) PST - Pacific Standard ...

Where is the 510 area code?from spokeo.com
Phone numbers in the 510 area code can be found in 17 cities or locations. Those phone numbers can be found in the following cities or locations: Alameda, Albany, Berkeley, Crockett, El Sobrante, Fremont, Hayward, Hercules, Oakland, Richmond, San Francisco, San Jose, San Leandro, Sunnyvale, Union City, Walnut Creek.
How many area codes are there in Canada?from allareacodes.com
Canada has 40 area codes. When area codes were created in 1947 to prepare for a nationwide unified long-distance dialing system, all of Canada was not covered. Newfoundland, Labrador, and the Northwest, Yukon, and Nunavut territories were not included. The original 9 area codes of Canada include 204, 306, 403, 416, 418, 514, 604, 613, and 902.
What is the area code 782?from allareacodes.com
Only 3 cross province boundaries: 782, 867, and 902. Area code 782 serves Nova Scotia and Prince Edward Island.
Where is the San Mateo-Hayward Bridge?from spokeo.com
It is located primarily between Castro Valley and Union City, and lies at the eastern terminus of the San Mateo-Hayward Bridge. The city was devastated early in its history by the 1868 Hayward earthquake.
Where is the 510 area code?
Area codes 510 and 341 are telephone area codes in the North American Numbering Plan (NANP) serving much of the East Bay in California. They cover parts of Contra Costa County and western Alameda County, including the city of Oakland, but excluding Dublin, Livermore, Pleasanton, and Sunol . Area code 510 was established on September 2, 1991, in ...
What is 510 TWX?
Prior usage of 510 for TWX. In the United States, AT&T originally used NPA 510 for the TWX ( TeletypeWriter eXchange) network. Western Union acquired the TWX network in 1969 and renamed it Telex II. By the 1970s, three TWX codes had been added ( 710 in the Northeast, 810 in Michigan, Ohio, Indiana, Kentucky, North Carolina, South Carolina, Georgia, ...
What is the NANPA relief code for 510?
NANPA had previously assigned 341 as the relief area code for 510 in 1999, but nationwide number pooling procedures eliminated the need at that time. The NANPA retained 341 for the then-future relief of 510. CPUC accepted the NANPA proposal in a decision on June 21, 2018. With the start of the overlay plan in July 2019, ...
What is the area code for Berkeley Hills?
In response to projections that 510 would exhaust in the second quarter of 2019, the California Public Utilities Commission approved the addition of an overlay area code, 341, to serve the East Bay.
When will NPA 510 be exhausted?
By 2016, the California Public Utilities Commission (CUPC) projected that NPA 510 would exhaust its numbering pool by the second quarter of 2019. In response, the commission held meetings in Berkeley, Oakland and Hayward in January and February 2017 to discuss area code relief for 510.
Is 510 an overlay?
Prior to 2019, 510 had been one of the few urbanized area codes without an overlay, making Oakland one of the few large cities where seven-digit dialing was still possible.
Where is the 510 area code?from spokeo.com
Area Code 510 is one of the 269 three-digit telephone area codes in the USA. It covers roughly 7,927,000 unique phone numbers and 3,529,307 individuals near the cities of Oakland, Fremont, and Hayward.
Where is the San Mateo-Hayward Bridge?from spokeo.com
It is located primarily between Castro Valley and Union City, and lies at the eastern terminus of the San Mateo-Hayward Bridge. The city was devastated early in its history by the 1868 Hayward earthquake.
Where is the 510 area code?from spokeo.com
Area Code 510 is one of the 269 three-digit telephone area codes in the USA. It covers roughly 7,927,000 unique phone numbers and 3,529,307 individuals near the cities of Oakland, Fremont, and Hayward.
Where is the San Mateo-Hayward Bridge?from spokeo.com
It is located primarily between Castro Valley and Union City, and lies at the eastern terminus of the San Mateo-Hayward Bridge. The city was devastated early in its history by the 1868 Hayward earthquake.
Where is the 510 area code?from spokeo.com
Area Code 510 is one of the 269 three-digit telephone area codes in the USA. It covers roughly 7,927,000 unique phone numbers and 3,529,307 individuals near the cities of Oakland, Fremont, and Hayward.
What is the NANPA relief code for 510?from en.wikipedia.org
NANPA had previously assigned 341 as the relief area code for 510 in 1999, but nationwide number pooling procedures eliminated the need at that time. The NANPA retained 341 for the then-future relief of 510. CPUC accepted the NANPA proposal in a decision on June 21, 2018. With the start of the overlay plan in July 2019, ...
What is 510 TWX?from en.wikipedia.org
Prior usage of 510 for TWX. In the United States, AT&T originally used NPA 510 for the TWX ( TeletypeWriter eXchange) network. Western Union acquired the TWX network in 1969 and renamed it Telex II. By the 1970s, three TWX codes had been added ( 710 in the Northeast, 810 in Michigan, Ohio, Indiana, Kentucky, North Carolina, South Carolina, Georgia, ...
When will NPA 510 be exhausted?from en.wikipedia.org
By 2016, the California Public Utilities Commission (CUPC) projected that NPA 510 would exhaust its numbering pool by the second quarter of 2019. In response, the commission held meetings in Berkeley, Oakland and Hayward in January and February 2017 to discuss area code relief for 510.
Where is the most area code?
There are 405 area codes in the world: 326 in the US, 42 in Canada, 17 non-geographic, and 20 others. Most of the other area codes are in the Caribbean. However, some are located in the Pacific including 684 (American Samoa), 671 (Guam), and 670 (Northern Mariana Islands). California is the state with the most area codes ...
What is the second digit of the area code?
The second digit was either a 0 for an area code covering an entire state/province or 1 for an area code covering part of a state/province.
How did area codes get created?
For decades, new area codes were created through a "split" of an existing area code into multiple regions. Normally, the more populated region would continue to use the existing area code. The less populated areas would have all existing phone numbers reassigned to use a new area code to free up more numbers in the original area code. This process forced many into a new phone number which would require updates to letterhead, business cards, phone directories, personal contact lists, etc. Many people would dial the incorrect area code which caused confusion.
Where is 7 digit dialing broken?
The few major cities where 10-digit dialing is not required include Detroit, El Paso, Jacksonville, Louisville, Memphis, Milwaukee and Oklahoma City. Many areas not served by an overlay can still use 7-digit dialing.
What are non-geographic area codes?
One of the most common are toll-free area codes where the caller is not billed for long distance (though wireless customers may have minutes deducted from their plan): 800, 833, 844, 855, 866, 877, and 888.
When was the 301 area code introduced?
In 1997 , area code 301 was introduced as the first overlay with forced 10 digit dialing for local calls. Initially, there was substantial public resistance to overlays because of the 10-digit dialing requirement for local calls.
How many phone numbers can you have?
Based on the total number of active NPA and NXX combinations reserved and that each one could have up to 10,000 possible subscriber numbers, the current total possible number of telephone numbers is 1,699,140,000. Based on the total population of the US and Canada according to the US Census and the World Bank, that leaves 4 phone numbers for every person. Remember though that phone numbers are no longer just used for standard home phones. Many telephone numbers are now used for fax machines, cell phones or wireless phones, or internet connections so one person may actually need multiple phone lines.

Overview
Area codes 510 and 341 are telephone area codes in the North American Numbering Plan (NANP) serving much of the East Bay in California. They cover parts of Contra Costa County and western Alameda County, including the city of Oakland, but excluding Dublin, Livermore, Pleasanton, and Sunol.
Area code 510 was established on September 2, 1991, in a split from area cod…
Cities in the numbering plan area
• Alameda
• Albany
• Ashland
• Berkeley
• Castro Valley
Introduction of 341
By 2016, the California Public Utilities Commission (CUPC) projected that NPA 510 would exhaust its numbering pool by the second quarter of 2019. In response, the commission held meetings in Berkeley, Oakland and Hayward in January and February 2017 to discuss area code relief for 510. The North American Numbering Plan Administrator (NANPA) proposed in May 2017 that CPUC relieve 510 by introducing the overlay area code 341 for the entire territory. NANPA had previousl…
Prior usage of 510 for TWX
In the United States, AT&T originally used NPA 510 for the TWX (TeletypeWriter eXchange) network. Western Union acquired the TWX network in 1969 and renamed it Telex II. By the 1970s, three TWX codes had been added (710 in the Northeast, 810 in Michigan, Ohio, Indiana, Kentucky, North Carolina, South Carolina, Georgia, Florida, Louisiana, Mississippi, and Alabama; and 910 west of the Mississippi). Each major city had one or more local exchange prefixes. Western Union upg…
See also
• List of California area codes