Input a CLLI:

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

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npa-nxxStateCompanyOCNRate CenterCLLIAssign DateMisc
281-331TXSOUTHWESTERN BELL9533ALVINALVNTXALDS000/00/0000Prefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-388TXSOUTHWESTERN BELL9533ALVINALVNTXALDS000/00/0000Prefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-393TXSOUTHWESTERN BELL9533LIVERPOOLALVNTXALDS000/00/0000Prefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
Thousands block for 281-393
281-393-1TXSOUTHWESTERN BELL9533LIVERPOOLALVNTXALDS0N/APrefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-393-5TXSOUTHWESTERN BELL9533LIVERPOOLALVNTXALDS0N/APrefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-393-6TXSOUTHWESTERN BELL9533LIVERPOOLALVNTXALDS0N/APrefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-581TXSOUTHWESTERN BELL9533LIVERPOOLALVNTXALDS000/00/0000Prefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
Thousands block for 281-581
281-581-2TXSOUTHWESTERN BELL9533LIVERPOOLALVNTXALDS0N/APrefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-581-3TXSOUTHWESTERN BELL9533LIVERPOOLALVNTXALDS0N/APrefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-581-4TXSOUTHWESTERN BELL9533LIVERPOOLALVNTXALDS0N/APrefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-585TXSOUTHWESTERN BELL9533ALVINALVNTXALDS000/00/0000Prefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-756TXSOUTHWESTERN BELL9533ALVINALVNTXALDS000/00/0000Prefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
Thousands block for 281-756
281-756-0TXSOUTHWESTERN BELL9533ALVINALVNTXALDS0N/APrefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-756-1TXSOUTHWESTERN BELL9533ALVINALVNTXALDS0N/APrefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-756-2TXSOUTHWESTERN BELL9533ALVINALVNTXALDS0N/APrefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-756-3TXSOUTHWESTERN BELL9533ALVINALVNTXALDS0N/APrefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-756-4TXSOUTHWESTERN BELL9533ALVINALVNTXALDS0N/APrefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-756-5TXSOUTHWESTERN BELL9533ALVINALVNTXALDS0N/APrefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-756-8TXSOUTHWESTERN BELL9533ALVINALVNTXALDS0N/APrefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-756-9TXSOUTHWESTERN BELL9533ALVINALVNTXALDS0N/APrefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-824TXSOUTHWESTERN BELL9533ALVINALVNTXALDS000/00/0000Prefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
Thousands block for 281-824
281-824-0TXSOUTHWESTERN BELL9533ALVINALVNTXALDS0N/APrefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-824-8TXSOUTHWESTERN BELL9533ALVINALVNTXALDS0N/APrefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
281-824-9TXSOUTHWESTERN BELL9533ALVINALVNTXALDS0N/APrefix Type: RBOC
Switch Name: ALVIN
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: Houston TX (560)
Tandem: N/A
Detailed Switch Info
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