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In December, 1999, the North American Numbering Plan Administration (NANPA), a private
industry group that oversees the area code number assignment system, notified the PUC that
area code 512 was in jeopardy. As one of the first states authorized by the FCC to conduct
number pooling trials, the PUC in March, 2000, ordered 1000-block number pooling to begin
August 1, 2000 in the 512 area code. This number conservation method frees more telephone
numbers for immediate use and preserves seven-digit dialing for local calls.
The PUC is closely monitoring this number pooling trial. When a new area code is needed
in the region served by area code 512, the PUC will order implementation of a concentrated
overlay and announce a second area code. This will be the second area code for callers
living in Austin, San Marcos, Georgetown, Kyle, Buda, and Leander. After the new area
code is in effect, residents in these cities will dial ten digits to complete a local call.
For more information, go to this press release http://www.puc.state.tx.us/nrelease/2000/050400.cfm
Cities and prefixes for each area code have been provided by the North American Numbering
Plan Administration (NANPA), which oversees the area code number assignment system. This information
will change as new prefixes are added or returned.
Prefix information will be updated periodically from the NANPA database of
Texas prefixes in use in each area code. All prefixes listed on the Texas Area Codes site reflect NANPA numbering data through June, 2009. Because of the way
telephone data is assembled, some cities may not be on the list. If you feel any city is not
listed or is listed incorrectly, please send the city, prefix, and area code to
areacode@puc.state.tx.us and it will be researched and added if NANPA’s information coincides. Any questions or comments about the Texas
Area Codes section of the PUC site should also be sent to this address.
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