Warning: site is in maintainance mode, data may not be accurate and some queries may not work!
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
520-896AZQWEST CORPORATION0003746757RMD00063899636SAN MANUELORCLAZMARS100/00/0000Prefix Type: RBOC
Switch Name: ORACLE
Switch Type: Northern Telecom Remote Switching Center
LATA: Tucson AZ (668)
Tandem: TCSNAZMA04T
🔧 Explore Switch(CLLI: ORCLAZMARS1))
520-896 is split into 1,000-number blocks - detail below
520-896-0XXXAZQWEST CORPORATION0003746757RMD00063899636SAN MANUELORCLAZMARS1N/APrefix Type: RBOC
Switch Name: ORACLE
Switch Type: Northern Telecom Remote Switching Center
LATA: Tucson AZ (668)
Tandem: TCSNAZMA04T
🔧 Explore Switch(CLLI: ORCLAZMARS1))
520-896-1XXXAZONVOY, LLC - AZ (Sinch)0004323028RMD0001966630ESAN MANUELNOCLLIKNOWN05/30/2008Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Tucson AZ (668)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
520-896-2XXXAZQWEST CORPORATION0003746757RMD00063899636SAN MANUELORCLAZMARS1N/APrefix Type: RBOC
Switch Name: ORACLE
Switch Type: Northern Telecom Remote Switching Center
LATA: Tucson AZ (668)
Tandem: TCSNAZMA04T
🔧 Explore Switch(CLLI: ORCLAZMARS1))
520-896-3XXXAZQWEST CORPORATION0003746757RMD00063899636SAN MANUELORCLAZMARS1N/APrefix Type: RBOC
Switch Name: ORACLE
Switch Type: Northern Telecom Remote Switching Center
LATA: Tucson AZ (668)
Tandem: TCSNAZMA04T
🔧 Explore Switch(CLLI: ORCLAZMARS1))
520-896-4XXXAZONVOY, LLC - AZ (Sinch)0004323028RMD0001966630ESAN MANUELNOCLLIKNOWN02/25/2013Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Tucson AZ (668)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
520-896-5XXXAZHD CARRIER LLC0026630681RMD0013231321JSAN MANUELTCSMAZCHEMD08/22/2025Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Tucson AZ (668)
Tandem: N/A
🔧 Explore Switch(CLLI: TCSMAZCHEMD))
520-896-6XXXAZQWEST CORPORATION0003746757RMD00063899636SAN MANUELORCLAZMARS1N/APrefix Type: RBOC
Switch Name: ORACLE
Switch Type: Northern Telecom Remote Switching Center
LATA: Tucson AZ (668)
Tandem: TCSNAZMA04T
🔧 Explore Switch(CLLI: ORCLAZMARS1))
520-896-7XXXAZONVOY, LLC - AZ (Sinch)0004323028RMD0001966630ESAN MANUELNOCLLIKNOWN04/26/2007Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Tucson AZ (668)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
520-896-8XXXAZCENTURYLINK COMMUNICATIONS, LLC (Lumen Technologies, Inc)0031422439RMD0006976508JSAN MANUELTCSNAZMAXYX05/26/2015Prefix Type: IPES
Switch Name: TUCSON
Switch Type: N/A
LATA: Tucson AZ (668)
Tandem: N/A
🔧 Explore Switch(CLLI: TCSNAZMAXYX))
520-896-9XXXAZQWEST CORPORATION0003746757RMD00063899636SAN MANUELORCLAZMARS1N/APrefix Type: RBOC
Switch Name: ORACLE
Switch Type: Northern Telecom Remote Switching Center
LATA: Tucson AZ (668)
Tandem: TCSNAZMA04T
🔧 Explore Switch(CLLI: ORCLAZMARS1))
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.