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
443-663MDVERIZON MARYLAND, INC. (Verizon Communications)N/A9212WOODLAWNWDLWMDWLDS000/00/0000Prefix Type: RBOC
Switch Name: WOODLAWN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: WDLWMDWLDS0))
443-663 is split into 1,000-number blocks - detail below
443-663-0XXXMDBALTIMORE-WASHINGTON TELEPHONE (BWT)N/A8697WOODLAWNNOCLLIKNOWN05/27/2015Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-663-1XXXMDTERRA NOVA TELECOM INC.N/A145JWOODLAWNNOCLLIKNOWN08/13/2024Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-663-2XXXMDCORE COMMUNICATIONS, INC.- MDN/A2593WOODLAWNNOCLLIKNOWN04/15/2019Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-663-3XXXMDONVOY, LLC - MDN/A876DWOODLAWNNOCLLIKNOWN02/15/2016Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-663-4XXXMDONVOY, LLC - MDN/A876DWOODLAWNNOCLLIKNOWN09/22/2015Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-663-5XXXMDONVOY, LLC - MDN/A876DWOODLAWNNOCLLIKNOWN02/15/2016Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-663-6XXXMDVERIZON MARYLAND, INC.N/A9212WOODLAWNWDLWMDWLDS0 N/APrefix Type: WIRELESS
Switch Name: WOODLAWN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: WDLWMDWLDS0 ))
443-663-7XXXMDCENTURYLINK COMMUNICATIONS, LLCN/A508JWOODLAWNNOCLLIKNOWN05/23/2014Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
443-663-8XXXMDVERIZON MARYLAND, INC.N/A9212WOODLAWNWDLWMDWLDS0 N/APrefix Type: WIRELESS
Switch Name: WOODLAWN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: WDLWMDWLDS0 ))
443-663-9XXXMDIP HORIZON LLCN/A515JWOODLAWNNOCLLIKNOWN05/03/2016Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))