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
979-453TXNEW CINGULAR WIRELESS PCS, LLC - IL (AT&T Wireless)0003291192RMD00369096534WHARTONHSTPTXJAAMD00/00/0000Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Houston TX (560)
Tandem: N/A
🔧 Explore Switch(CLLI: HSTPTXJAAMD))
979-453 is split into 1,000-number blocks - detail below
979-453-0XXXTXNEW CINGULAR WIRELESS PCS, LLC - IL (AT&T Wireless)0003291192RMD00369096534WHARTONHSTPTXJAAMD N/APrefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Houston TX (560)
Tandem: N/A
🔧 Explore Switch(CLLI: HSTPTXJAAMD ))
979-453-1XXXTXNEW CINGULAR WIRELESS PCS, LLC - IL (AT&T Wireless)0003291192RMD00369096534WHARTONHSTPTXJAAMD N/APrefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Houston TX (560)
Tandem: N/A
🔧 Explore Switch(CLLI: HSTPTXJAAMD ))
979-453-2XXXTXCOMCAST IP PHONE, LLC (Comcast)0008497687RMD0003552318JWHARTONNOCLLIKNOWN03/23/2022Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Houston TX (560)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
979-453-3XXXTXIP HORIZON LLCRMD0001571515JWHARTONNOCLLIKNOWN04/07/2025Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Houston TX (560)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
979-453-4XXXTXIP HORIZON LLCRMD0001571515JWHARTONNOCLLIKNOWN04/07/2025Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Houston TX (560)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
979-453-5XXXTXTERRA NOVA TELECOM INC.0021193057RMD0001495145JWHARTONNOCLLIKNOWN10/16/2024Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: Houston TX (560)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
979-453-6XXXTXNEW CINGULAR WIRELESS PCS, LLC - IL (AT&T Wireless)0003291192RMD00369096534WHARTONHSTPTXJAAMD 12/10/2025Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Houston TX (560)
Tandem: N/A
🔧 Explore Switch(CLLI: HSTPTXJAAMD ))
979-453-8XXXTXONVOY, LLC - TX (Sinch)0004323028RMD0001966903CWHARTONNOCLLIKNOWN07/19/2023Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Houston TX (560)
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.