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| npa-nxx | State/Province | Company | FRN | RMD | OCN | Rate Center | CLLI | Assign Date | Misc |
| 978-520 | MA | PAETEC ITEL, LLC | 0015247810 | RMD0038378 | 829J | WILMINGTON | WRCSMASNDS1 | 05/08/2001 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: WRCSMASNDS1)) |
| 978-520 is split into 1,000-number blocks - detail below | |||||||||
| 978-520-0XXX | MA | PAETEC ITEL, LLC | 0015247810 | RMD0038378 | 829J | WILMINGTON | NOCLLIKNOWN | N/A | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN)) |
| 978-520-1XXX | MA | ONVOY, LLC - MA (Sinch) | 0004323028 | RMD0001966 | 892D | WILMINGTON | NOCLLIKNOWN | 11/18/2009 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN)) |
| 978-520-5XXX | MA | ONVOY SPECTRUM, LLC (Sinch) | 0024415002 | RMD0002045 | 624H | WILMINGTON | NOCLLIKNOWN | 03/16/2021 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN)) |
| 978-520-8XXX | MA | IP HORIZON LLC | 0027469766 | RMD0001571 | 515J | WILMINGTON | NOCLLIKNOWN | 06/01/2016 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN)) |
| 978-520-9XXX | MA | ONVOY, LLC - MA (Sinch) | 0004323028 | RMD0001966 | 892D | WILMINGTON | NOCLLIKNOWN | 01/24/2019 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: eastern MA (128) Tandem: N/A 🔧 Explore Switch(CLLI: NOCLLIKNOWN)) |