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
951-436CAT-MOBILE USA, INC. (T-Mobile US, Inc)0017078262RMD00190516529PERRISRVSDCAYAGT100/00/0000Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Los Angeles CA (730)
Tandem: N/A
🔧 Explore Switch(CLLI: RVSDCAYAGT1))
🕘 Prefix History
🔎 Explore Carrier Information
951-436 is split into 1,000-number blocks - detail below
951-436-0XXXCABANDWIDTH.COM CLEC, LLC - CA (Bandwidth Inc.)0017042060RMD0003709981EPERRISNOCLLIKNOWNN/APrefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Los Angeles CA (730)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
🕘 Prefix History
🔎 Explore Carrier Information
951-436-1XXXCANEW CINGULAR WIRELESS PCS, LLC (AT&T)0003291192RMD00369096010PERRISRVSDCALBCM406/27/2017Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Los Angeles CA (730)
Tandem: N/A
🔧 Explore Switch(CLLI: RVSDCALBCM4))
🕘 Prefix History
🔎 Explore Carrier Information
951-436-2XXXCAAT&T - LOCAL (AT&T)N/A7421PERRISNOCLLIKNOWN10/12/2001Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Los Angeles CA (730)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
🕘 Prefix History
🔎 Explore Carrier Information
951-436-3XXXCAPAETEC ITEL, LLC0015247810RMD0038378829JPERRISLSAJCAWZDS109/27/2002Prefix Type: IPES
Switch Name: LOS ANGELES
Switch Type: N/A
LATA: Los Angeles CA (730)
Tandem: N/A
🔧 Explore Switch(CLLI: LSAJCAWZDS1))
🕘 Prefix History
🔎 Explore Carrier Information
951-436-4XXXCATELEPORT COMMUNICATIONS AMERICA, LLC - CA (AT&T)0004274114RMD00038977139PERRISNOCLLIKNOWN10/07/2002Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Los Angeles CA (730)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
🕘 Prefix History
🔎 Explore Carrier Information
951-436-5XXXCAU.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (U.S. TELEPACIFIC CORP.)0003733813RMD0003303671JPERRISNOCLLIKNOWN04/08/2003Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Los Angeles CA (730)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
🕘 Prefix History
🔎 Explore Carrier Information
951-436-6XXXCAT-MOBILE USA, INC. (T-Mobile US, Inc)0017078262RMD00190516529PERRISRVSDCAYAGT105/22/2003Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Los Angeles CA (730)
Tandem: N/A
🔧 Explore Switch(CLLI: RVSDCAYAGT1))
🕘 Prefix History
🔎 Explore Carrier Information
951-436-7XXXCAMCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA (Verizon Communications)0004999405RMD00029577240PERRISIRVECAEIDS204/14/2003Prefix Type: CLEC
Switch Name: IRVINE
Switch Type: Northern Telecom DMS10S
LATA: Los Angeles CA (730)
Tandem: N/A
🔧 Explore Switch(CLLI: IRVECAEIDS2))
🕘 Prefix History
🔎 Explore Carrier Information
951-436-8XXXCAT-MOBILE USA, INC. (T-Mobile US, Inc)0017078262RMD00190516529PERRISRVSDCAYAGT107/23/2004Prefix Type: PCS
Switch Name: N/A
Switch Type: N/A
LATA: Los Angeles CA (730)
Tandem: N/A
🔧 Explore Switch(CLLI: RVSDCAYAGT1))
🕘 Prefix History
🔎 Explore Carrier Information
951-436-9XXXCALEVEL 3 COMMUNICATIONS, LLC - CA (Lumen Technologies, Inc)0015338122RMD00061128826PERRISNOCLLIKNOWNN/APrefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Los Angeles CA (730)
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.