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| npa-nxx | State/Province | Company | FRN | RMD | OCN | Rate Center | CLLI | Assign Date | Misc |
| 937-221 | OH | OHIO BELL TEL CO (AT&T) | N/A | 9321 | DAYTON | DYTNOH2222J | 00/00/0000 | Prefix Type: RBOC Switch Name: DAYTON DWTN 22J Switch Type: DMS100 LATA: Dayton OH (328) Tandem: DYTNOH225GT 🔧 Explore Switch(CLLI: DYTNOH2222J)) | |
| 937-221 is split into 1,000-number blocks - detail below | |||||||||
| 937-221-0XXX | OH | OHIO BELL TEL CO (AT&T) | N/A | 9321 | DAYTON | DYTNOH2222J | N/A | Prefix Type: RBOC Switch Name: DAYTON DWTN 22J Switch Type: DMS100 LATA: Dayton OH (328) Tandem: DYTNOH225GT 🔧 Explore Switch(CLLI: DYTNOH2222J)) | |
| 937-221-1XXX | OH | OHIO BELL TEL CO (AT&T) | N/A | 9321 | DAYTON | DYTNOH2222J | N/A | Prefix Type: RBOC Switch Name: DAYTON DWTN 22J Switch Type: DMS100 LATA: Dayton OH (328) Tandem: DYTNOH225GT 🔧 Explore Switch(CLLI: DYTNOH2222J)) | |
| 937-221-2XXX | OH | OHIO BELL TEL CO (AT&T) | N/A | 9321 | DAYTON | DYTNOH2222J | N/A | Prefix Type: RBOC Switch Name: DAYTON DWTN 22J Switch Type: DMS100 LATA: Dayton OH (328) Tandem: DYTNOH225GT 🔧 Explore Switch(CLLI: DYTNOH2222J)) | |
| 937-221-3XXX | OH | OHIO BELL TEL CO (AT&T) | N/A | 9321 | DAYTON | DYTNOH2222J | N/A | Prefix Type: RBOC Switch Name: DAYTON DWTN 22J Switch Type: DMS100 LATA: Dayton OH (328) Tandem: DYTNOH225GT 🔧 Explore Switch(CLLI: DYTNOH2222J)) | |
| 937-221-4XXX | OH | OHIO BELL TEL CO (AT&T) | N/A | 9321 | DAYTON | DYTNOH2222J | N/A | Prefix Type: RBOC Switch Name: DAYTON DWTN 22J Switch Type: DMS100 LATA: Dayton OH (328) Tandem: DYTNOH225GT 🔧 Explore Switch(CLLI: DYTNOH2222J)) | |
| 937-221-5XXX | OH | OHIO BELL TEL CO (AT&T) | N/A | 9321 | DAYTON | DYTNOH2222J | N/A | Prefix Type: RBOC Switch Name: DAYTON DWTN 22J Switch Type: DMS100 LATA: Dayton OH (328) Tandem: DYTNOH225GT 🔧 Explore Switch(CLLI: DYTNOH2222J)) | |
| 937-221-6XXX | OH | OHIO BELL TEL CO (AT&T) | N/A | 9321 | DAYTON | DYTNOH2222J | N/A | Prefix Type: RBOC Switch Name: DAYTON DWTN 22J Switch Type: DMS100 LATA: Dayton OH (328) Tandem: DYTNOH225GT 🔧 Explore Switch(CLLI: DYTNOH2222J)) | |
| 937-221-7XXX | OH | OHIO BELL TEL CO (AT&T) | N/A | 9321 | DAYTON | DYTNOH2222J | N/A | Prefix Type: RBOC Switch Name: DAYTON DWTN 22J Switch Type: DMS100 LATA: Dayton OH (328) Tandem: DYTNOH225GT 🔧 Explore Switch(CLLI: DYTNOH2222J)) | |
| 937-221-8XXX | OH | AT&T ENTERPRISES, LLC (AT&T) | 0035146430 | RMD0022433 | 516C | DAYTON | NOCLLIKNOWN | 02/17/2012 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: Dayton OH (328) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN)) |
| 937-221-9XXX | OH | TWC IP ENABLED SERVICES, LLC | N/A | 793K | DAYTON | DYTNOH22XRY | 12/26/2013 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: Dayton OH (328) Tandem: N/A 🔧 Explore Switch(CLLI: DYTNOH22XRY)) |