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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🔎 Tip: Click any Company, OCN, Rate Center, or CLLI to explore related telecom data

npa-nxxStateCompanyFRNRMDOCNRate CenterCLLIAssign DateMisc
619-292CAPACIFIC BELL (AT&T)0038213641RMD00392889740NATIONALCYNTCYCA11DS000/00/0000Prefix Type: RBOC
Switch Name: NATIONAL CITY
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: San Diego CA (732)
Tandem: N/A
🔧 Explore Switch(CLLI: NTCYCA11DS0))
🕘 Prefix History
🔎 Explore Carrier Information
619-292 is split into 1,000-number blocks - detail below
619-292-7XXXCAPACIFIC BELL (AT&T)0038213641RMD00392889740NATIONALCYNTCYCA11DS0N/APrefix Type: RBOC
Switch Name: NATIONAL CITY
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: San Diego CA (732)
Tandem: N/A
🔧 Explore Switch(CLLI: NTCYCA11DS0))
🕘 Prefix History
🔎 Explore Carrier Information
619-336CAPACIFIC BELL (AT&T)0038213641RMD00392889740NATIONALCYNTCYCA11DS000/00/0000Prefix Type: RBOC
Switch Name: NATIONAL CITY
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: San Diego CA (732)
Tandem: N/A
🔧 Explore Switch(CLLI: NTCYCA11DS0))
🕘 Prefix History
🔎 Explore Carrier Information
619-474CAPACIFIC BELL (AT&T)0038213641RMD00392889740NATIONALCYNTCYCA11DS000/00/0000Prefix Type: RBOC
Switch Name: NATIONAL CITY
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: San Diego CA (732)
Tandem: N/A
🔧 Explore Switch(CLLI: NTCYCA11DS0))
🕘 Prefix History
🔎 Explore Carrier Information
619-477CAPACIFIC BELL (AT&T)0038213641RMD00392889740NATIONALCYNTCYCA11DS000/00/0000Prefix Type: RBOC
Switch Name: NATIONAL CITY
Switch Type: Northern Telecom DMS100 (Digital) Host
LATA: San Diego CA (732)
Tandem: N/A
🔧 Explore Switch(CLLI: NTCYCA11DS0))
🕘 Prefix History
🔎 Explore Carrier Information
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