Input a CLLI:

Tip: A Partial CLLI can be entered, but must contain a minimum of the first 6 characters. I.E. 'DLLSTX'

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.
npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
410-235MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS000/00/0000Prefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-243MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS000/00/0000Prefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-261MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS000/00/0000Prefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 410-261
410-261-0MDNEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)4036BALTIMOREBLTMMDUVDS001/16/2024Prefix Type: WIRELESS
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-261-1MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-261-2MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-261-3MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-261-5MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-261-6MDONVOY, LLC - MD (Inteliquent)876DBALTIMOREBLTMMDUVDS001/29/2024Prefix Type: CLEC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-261-7MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-261-8MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-338MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS000/00/0000Prefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 410-338
410-338-0MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-338-1MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-338-2MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-338-3MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-338-4MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-338-5MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-338-6MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-338-7MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-338-8MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-366MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS000/00/0000Prefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-467MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS000/00/0000Prefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-516MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS000/00/0000Prefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 410-516
410-516-0MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-516-1MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-516-2MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-516-3MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-516-4MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-516-5MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-516-6MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-516-7MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-516-8MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-516-9MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS002/13/2002Prefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-554MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS000/00/0000Prefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-662MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS000/00/0000Prefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
Thousands block for 410-662
410-662-0MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-662-1MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-662-4MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-662-5MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-662-6MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-662-7MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-662-8MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-662-9MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS0N/APrefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
410-889MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS000/00/0000Prefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info
443-997MDVERIZON MARYLAND, INC. (Verizon Communications)9212BALTIMOREBLTMMDUVDS000/00/0000Prefix Type: RBOC
Switch Name: BALTIMORE
Switch Type: WECO 5ESS (Digital)
LATA: Baltimore MD (238)
Tandem: N/A
Detailed Switch Info