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
857-400MABANDWIDTH.COM CLEC, LLC - MA0017042060RMD0003709990EBOSTONCMBRMABEHZ111/03/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: CMBRMABEHZ1))
857-400 is split into 1,000-number blocks - detail below
857-400-0XXXMABANDWIDTH.COM CLEC, LLC - MA0017042060RMD0003709990EBOSTONCMBRMABEHZ1 11/05/2010Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: CMBRMABEHZ1 ))
857-400-1XXXMACELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA (Verizon Wireless)0003290673RMD00033826387BOSTONNOCLLIKNOWN03/26/2014Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
857-400-2XXXMAMCIMETRO ACCESS TRANSMISSION SERVICES LLC0004999405RMD00029577229BOSTONNOCLLIKNOWN11/02/2011Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
857-400-3XXXMAMCIMETRO ACCESS TRANSMISSION SERVICES LLC0004999405RMD00029577229BOSTONNOCLLIKNOWN04/12/2011Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
857-400-4XXXMANEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)0003291192RMD00369094036BOSTONNOCLLIKNOWN11/16/2011Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
857-400-5XXXMAPAETEC ITEL, LLC0015247810RMD0038378829JBOSTONNOCLLIKNOWN04/01/2011Prefix Type: IPES
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
857-400-6XXXMANEW CINGULAR WIRELESS PCS, LLC - DC (AT&T Wireless)0003291192RMD00369094036BOSTONNOCLLIKNOWN11/16/2011Prefix Type: WIRELESS
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: NOCLLIKNOWN))
857-400-7XXXMABANDWIDTH.COM CLEC, LLC - MA0017042060RMD0003709990EBOSTONCMBRMABEHZ1 05/09/2011Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: CMBRMABEHZ1 ))
857-400-8XXXMABANDWIDTH.COM CLEC, LLC - MA0017042060RMD0003709990EBOSTONCMBRMABEHZ1 05/09/2011Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: CMBRMABEHZ1 ))
857-400-9XXXMABANDWIDTH.COM CLEC, LLC - MA0017042060RMD0003709990EBOSTONCMBRMABEHZ1 02/17/2011Prefix Type: CLEC
Switch Name: N/A
Switch Type: N/A
LATA: N/A
Tandem: N/A
🔧 Explore Switch(CLLI: CMBRMABEHZ1 ))