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
650-839CAPACIFIC BELL (AT&T)0038213641RMD00392889740REDWOOD CYRDCYCA01DS000/00/0000Prefix Type: RBOC
Switch Name: REDWOOD CITY
Switch Type: WECO 5ESS (Digital)
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: RDCYCA01DS0))
650-839 is split into 1,000-number blocks - detail below
650-839-0XXXCAPACIFIC BELL (AT&T)0038213641RMD00392889740REDWOOD CYRDCYCA01DS0N/APrefix Type: RBOC
Switch Name: REDWOOD CITY
Switch Type: WECO 5ESS (Digital)
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: RDCYCA01DS0))
650-839-1XXXCAPACIFIC BELL (AT&T)0038213641RMD00392889740REDWOOD CYRDCYCA01DS0N/APrefix Type: RBOC
Switch Name: REDWOOD CITY
Switch Type: WECO 5ESS (Digital)
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: RDCYCA01DS0))
650-839-2XXXCAONVOY, LLC - CA (Sinch)0004323028RMD0001966649CREDWOOD CYNOCLLIKNOWN12/04/2012Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
650-839-3XXXCANEW CINGULAR WIRELESS PCS, LLC (AT&T Wireless)0003291192RMD00369096010REDWOOD CYSNTDCAUJCM907/24/2008Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: SNTDCAUJCM9))
650-839-4XXXCALEVEL 3 COMMUNICATIONS, LLC - CA (Lumen Technologies, Inc)0015338122RMD00061128826REDWOOD CYNOCLLIKNOWN06/12/2012Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
650-839-5XXXCAPACIFIC BELL (AT&T)0038213641RMD00392889740REDWOOD CYRDCYCA01DS0N/APrefix Type: RBOC
Switch Name: REDWOOD CITY
Switch Type: WECO 5ESS (Digital)
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: RDCYCA01DS0))
650-839-6XXXCACOMCAST PHONE OF CALIFORNIA, LLCN/A394LREDWOOD CYNOCLLIKNOWN10/08/2018Prefix Type: UNKNOWN
Switch Name: N/A
Switch Type: N/A
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
650-839-7XXXCAONVOY, LLC - CA (Sinch)0004323028RMD0001966649CREDWOOD CYNOCLLIKNOWN12/04/2012Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
650-839-8XXXCAPACIFIC BELL (AT&T)0038213641RMD00392889740REDWOOD CYRDCYCA01DS0N/APrefix Type: RBOC
Switch Name: REDWOOD CITY
Switch Type: WECO 5ESS (Digital)
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: RDCYCA01DS0))
650-839-9XXXCAONVOY, LLC - CA (Sinch)0004323028RMD0001966649CREDWOOD CYNOCLLIKNOWN12/04/2012Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: San Francisco CA (722)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
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.