GRANDBLANC prefixes in area code 810
NANPA records 16 assigned NXX blocks to rate center GRANDBLANC in area code 810, 3.1% of the 509 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. 10 holders hold those blocks, the largest being MICHIGAN BELL TEL CO (5), TELEPORT COMMUNICATIONS AMERICA, LLC - MI (2), NEW CINGULAR WIRELESS PCS, LLC - IL (2). The earliest assignment on record here is 2005-01-26 and the most recent 2021-04-02. 13 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 |
|---|---|---|---|---|
| 810-254 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI | 2020-08-17 | yes | yes |
| 810-344 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 2005-01-26 | yes | yes |
| 810-428 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2017-06-02 | yes | yes |
| 810-445 | Lumen CENTURYLINK COMMUNICATIONS, LLC | 2014-08-28 | yes | yes |
| 810-495 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 2013-01-22 | yes | yes |
| 810-498 | AT&T NEW CINGULAR WIRELESS PCS, LLC - IL | 2015-07-23 | yes | yes |
| 810-579 | Windstream PAETEC ITEL, LLC | – | yes | yes |
| 810-584 | Lumen LEVEL 3 COMMUNICATIONS, LLC - MI | – | yes | yes |
| 810-603 | AT&T MICHIGAN BELL TEL CO | – | yes | yes |
| 810-606 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 810-694 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 810-695 | AT&T MICHIGAN BELL TEL CO | – | no | yes |
| 810-771 | GRID 4 COMMUNICATIONS, INC. - MI | 2006-09-20 | yes | yes |
| 810-799 | FRACTEL, LLC | 2021-04-02 | yes | yes |
| 810-866 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI | – | yes | yes |
| 810-953 | AT&T MICHIGAN BELL TEL CO | – | 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 |
|---|---|---|---|
| MICHIGAN BELL TEL CO | AT&T | 5 | 31.2% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - MI | AT&T | 2 | 12.5% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 2 | 12.5% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | Verizon | 1 | 6.2% |
| CENTURYLINK COMMUNICATIONS, LLC | Lumen | 1 | 6.2% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | Verizon | 1 | 6.2% |
| PAETEC ITEL, LLC | Windstream | 1 | 6.2% |
| LEVEL 3 COMMUNICATIONS, LLC - MI | Lumen | 1 | 6.2% |
| GRID 4 COMMUNICATIONS, INC. - MI | – | 1 | 6.2% |
| FRACTEL, LLC | – | 1 | 6.2% |
Frequently asked
Which prefixes belong to GRANDBLANC in area code 810?
16 blocks: 254, 344, 428, 445, 495, 498, 579, 584, 603, 606, 694, 695 and 4 more, all listed in the table above.
Which carriers have numbers in GRANDBLANC?
MICHIGAN BELL TEL CO (5 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - MI (2 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (2 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI (1 block), CENTURYLINK COMMUNICATIONS, LLC (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - 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 GRANDBLANC 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.