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
423-979TNUNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN (Lumen Technologies, Inc)0001770122RMD00063944510JOHNSON CYJHCYTNXCPS000/00/0000Prefix Type: ICO
Switch Name: JOHNSON CITY
Switch Type: N/A
LATA: Bristol-Johnson City TN (956)
Tandem: N/A
🔧 Explore Switch(CLLI: JHCYTNXCPS0))
423-979 is split into 1,000-number blocks - detail below
423-979-0XXXTNUNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN (Lumen Technologies, Inc)0001770122RMD00063944510JOHNSON CYJHCYTNXCPS0N/APrefix Type: ICO
Switch Name: JOHNSON CITY
Switch Type: N/A
LATA: Bristol-Johnson City TN (956)
Tandem: N/A
🔧 Explore Switch(CLLI: JHCYTNXCPS0))
423-979-1XXXTNUNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN (Lumen Technologies, Inc)0001770122RMD00063944510JOHNSON CYJHCYTNXCPS0N/APrefix Type: ICO
Switch Name: JOHNSON CITY
Switch Type: N/A
LATA: Bristol-Johnson City TN (956)
Tandem: N/A
🔧 Explore Switch(CLLI: JHCYTNXCPS0))
423-979-2XXXTNUNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN (Lumen Technologies, Inc)0001770122RMD00063944510JOHNSON CYJHCYTNXCPS0N/APrefix Type: ICO
Switch Name: JOHNSON CITY
Switch Type: N/A
LATA: Bristol-Johnson City TN (956)
Tandem: N/A
🔧 Explore Switch(CLLI: JHCYTNXCPS0))
423-979-3XXXTNUNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN (Lumen Technologies, Inc)0001770122RMD00063944510JOHNSON CYJHCYTNXCPS0N/APrefix Type: ICO
Switch Name: JOHNSON CITY
Switch Type: N/A
LATA: Bristol-Johnson City TN (956)
Tandem: N/A
🔧 Explore Switch(CLLI: JHCYTNXCPS0))
423-979-4XXXTNUNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN (Lumen Technologies, Inc)0001770122RMD00063944510JOHNSON CYJHCYTNXCPS0N/APrefix Type: ICO
Switch Name: JOHNSON CITY
Switch Type: N/A
LATA: Bristol-Johnson City TN (956)
Tandem: N/A
🔧 Explore Switch(CLLI: JHCYTNXCPS0))
423-979-5XXXTNUNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN (Lumen Technologies, Inc)0001770122RMD00063944510JOHNSON CYJHCYTNXCPS0N/APrefix Type: ICO
Switch Name: JOHNSON CITY
Switch Type: N/A
LATA: Bristol-Johnson City TN (956)
Tandem: N/A
🔧 Explore Switch(CLLI: JHCYTNXCPS0))
423-979-6XXXTNUNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN (Lumen Technologies, Inc)0001770122RMD00063944510JOHNSON CYJHCYTNXCPS0N/APrefix Type: ICO
Switch Name: JOHNSON CITY
Switch Type: N/A
LATA: Bristol-Johnson City TN (956)
Tandem: N/A
🔧 Explore Switch(CLLI: JHCYTNXCPS0))
423-979-7XXXTNUNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN (Lumen Technologies, Inc)0001770122RMD00063944510JOHNSON CYJHCYTNXCPS0N/APrefix Type: ICO
Switch Name: JOHNSON CITY
Switch Type: N/A
LATA: Bristol-Johnson City TN (956)
Tandem: N/A
🔧 Explore Switch(CLLI: JHCYTNXCPS0))
423-979-8XXXTNMOUNTAINET TELEPHONE COMPANY - TN (Scott County Telephone Cooperative)0006033393RMD0003571008AJOHNSON CYNOCLLIKNOWN01/20/2004Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: Bristol-Johnson City TN (956)
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
423-979-9XXXTNNEW CINGULAR WIRELESS PCS, LLC - GA (AT&T Wireless)0003291192RMD00369096214JOHNSON CYJHCYTNXCXYX08/09/2021Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: Bristol-Johnson City TN (956)
Tandem: N/A
🔧 Explore Switch(CLLI: JHCYTNXCXYX))
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.