Looking up a complete telephone number? Try Number Sleuth, a simplified interface for this lookup.

Input an Area Code (required) followed by the Prefix, or Exchange (optional):
-
If you were a paid member, you could be loading this into any version of Excel or Access (or any other software that understands CSV) right now for less than you paid for your breakfast or lunch today. If you are a member please login to access this and other functionality.

🔎 Tip: Click any Company, OCN, Rate Center, or CLLI to explore related telecom data

npa-nxxState/ProvinceCompanyFRNRMDOCNRate CenterCLLIAssign DateMisc
650-645CATELEPORT COMMUNICATIONS AMERICA, LLC - CA (AT&T)0004274114RMD00038977145SAN MATEOSNFCCAFJDS000/00/0000Prefix Type: CLEC
Switch Name: SAN FRANCISCO
Switch Type: WECO 5ESS (Digital)
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: SNFCCAFJDS0))
🕘 Prefix History
🔎 Explore Carrier Information
650-645 is split into 1,000-number blocks - detail below
650-645-0XXXCANEW CINGULAR WIRELESS PCS, LLC (AT&T)0003291192RMD00369096010SAN MATEOSNTDCAUJCM908/06/2013Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: SNTDCAUJCM9))
🕘 Prefix History
🔎 Explore Carrier Information
📡 Find related FCC/ISED radio licenses
650-645-1XXXCAU.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (U.S. TELEPACIFIC CORP.)0003733813RMD0003303671JSAN MATEOSNJSCAYB0MD02/14/2007Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: SNJSCAYB0MD))
🕘 Prefix History
🔎 Explore Carrier Information
650-645-2XXXCATELEPORT COMMUNICATIONS AMERICA, LLC - CA (AT&T)0004274114RMD00038977145SAN MATEOSNFCCAFJDS0N/APrefix Type: CLEC
Switch Name: SAN FRANCISCO
Switch Type: WECO 5ESS (Digital)
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: SNFCCAFJDS0))
🕘 Prefix History
🔎 Explore Carrier Information
650-645-3XXXCAMCIMETRO ACCESS TRANSMISSION SERVICES LLC (Verizon Communications Inc.)0004999405RMD00029577229SAN MATEOHYWRCA115MD02/14/2007Prefix Type: CLEC
Switch Name: HAYWARD
Switch Type: N/A
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: HYWRCA115MD))
🕘 Prefix History
🔎 Explore Carrier Information
650-645-4XXXCATELEPORT COMMUNICATIONS AMERICA, LLC - CA (AT&T)0004274114RMD00038977145SAN MATEOSNFCCAFJDS0N/APrefix Type: CLEC
Switch Name: SAN FRANCISCO
Switch Type: WECO 5ESS (Digital)
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: SNFCCAFJDS0))
🕘 Prefix History
🔎 Explore Carrier Information
650-645-5XXXCATELEPORT COMMUNICATIONS AMERICA, LLC - CA (AT&T)0004274114RMD00038977145SAN MATEOSNFCCAFJDS0N/APrefix Type: CLEC
Switch Name: SAN FRANCISCO
Switch Type: WECO 5ESS (Digital)
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: SNFCCAFJDS0))
🕘 Prefix History
🔎 Explore Carrier Information
650-645-6XXXCAU.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (U.S. TELEPACIFIC CORP.)0003733813RMD0003303671JSAN MATEOSNJSCAYB0MD02/14/2007Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: SNJSCAYB0MD))
🕘 Prefix History
🔎 Explore Carrier Information
650-645-7XXXCAU.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (U.S. TELEPACIFIC CORP.)0003733813RMD0003303671JSAN MATEOSNJSCAYB0MD02/14/2007Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: SNJSCAYB0MD))
🕘 Prefix History
🔎 Explore Carrier Information
650-645-8XXXCATELEPORT COMMUNICATIONS AMERICA, LLC - CA (AT&T)0004274114RMD00038977145SAN MATEOSNFCCAFJDS0N/APrefix Type: CLEC
Switch Name: SAN FRANCISCO
Switch Type: WECO 5ESS (Digital)
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: SNFCCAFJDS0))
🕘 Prefix History
🔎 Explore Carrier Information
650-645-9XXXCALEVEL 3 COMMUNICATIONS, LLC - CA (Lumen Technologies, Inc)0015338122RMD00061128826SAN MATEONOCLLIKNOWN10/24/2012Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
🕘 Prefix History
🔎 Explore Carrier Information
This information is not guaranteed to be accurate. User assumes all risk for any loss or gain resulting from use of this data.
Although I strive for accuracy and prompt updates of changed information, it is possible that there may be errors. If you see one, could you please report it?
Please report all errors, flames, questions, suggestions, and thanks to Paul Timmins
L'exactitude de ces renseignements n'est pas garantie. L'utilisateur assume l'entière responsabilité des pertes ou des gains découlant de l'utilisation de ces données.
Bien que je m'efforce d'assurer l'exactitude des informations et de les mettre à jour rapidement, des erreurs peuvent subsister. Si vous en voyez une, veuillez me la signaler.
Veuillez adresser vos commentaires, remarques, questions, suggestions et remerciements à Paul Timmins
Please see the Frequently Asked Questions page if you have any questions.
Copyright ©2001-2026, Paul Timmins/Timmins Technologies, LLC. All rights reserved
Website Design and User Interface ©2010, Adam Botbyl/Revolutionary Solutions, LLC.
Colocation generously provided by Clear Rate Communications, Inc
Has this site changed your life? Made your job easier? I always love Fanmail and Suggestions.