GRANDLEDGE prefixes in area code 517
NANPA records 8 assigned NXX blocks to rate center GRANDLEDGE in area code 517, 1.3% of the 616 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 6 holders hold those blocks, the largest being FRONTIER NORTH, INC. - MI (3), OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC (1), TELEPORT COMMUNICATIONS AMERICA, LLC - MI (1). The earliest assignment on record here is 2001-11-15 and the most recent 2020-10-20. 7 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 517-261 | T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2020-10-20 | yes | yes |
| 517-412 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 2010-05-26 | yes | yes |
| 517-622 | Frontier FRONTIER NORTH, INC. - MI | – | yes | yes |
| 517-626 | Frontier FRONTIER NORTH, INC. - MI | – | yes | yes |
| 517-627 | Frontier FRONTIER NORTH, INC. - MI | – | no | yes |
| 517-666 | Onvoy ONVOY, LLCV - MI | 2017-11-21 | yes | yes |
| 517-731 | Lumen LEVEL 3 COMMUNICATIONS, LLC - MI | 2009-11-16 | yes | yes |
| 517-925 | ACD TELECOM, INC. - MI | 2001-11-15 | yes | yes |
The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.
Who holds the blocks
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| FRONTIER NORTH, INC. - MI | Frontier | 3 | 37.5% |
| OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | T-Mobile | 1 | 12.5% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - MI | AT&T | 1 | 12.5% |
| ONVOY, LLCV - MI | Onvoy | 1 | 12.5% |
| LEVEL 3 COMMUNICATIONS, LLC - MI | Lumen | 1 | 12.5% |
| ACD TELECOM, INC. - MI | – | 1 | 12.5% |
Frequently asked
Which prefixes belong to GRANDLEDGE in area code 517?
8 blocks: 261, 412, 622, 626, 627, 666, 731, 925. The table above gives the holder of each.
Which carriers have numbers in GRANDLEDGE?
FRONTIER NORTH, INC. - MI (3 blocks), OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC - MI (1 block), ONVOY, LLCV - MI (1 block), LEVEL 3 COMMUNICATIONS, LLC - MI (1 block), ACD TELECOM, INC. - MI (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is GRANDLEDGE a city?
It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.