NumberingData
Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records

ROYAL OAK prefixes in area code 248

NANPA records 84 assigned NXX blocks to rate center ROYAL OAK in area code 248, 10.7% of the 784 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. 14 holders hold those blocks, the largest being MICHIGAN BELL TEL CO (36), NEW CINGULAR WIRELESS PCS, LLC - IL (12), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI (6). The earliest assignment on record here is 2001-05-02 and the most recent 2024-12-30. 41 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area code 947 – overlay codes cover the same geography, so a rate center is served by all of them.

84 assigned blocks – 10.7% of 248
14 holders of record
41 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
248-206 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI 2014-02-12 yes yes
248-217 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
248-219 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
248-224 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
248-235 American Messaging AMERICAN MESSAGING SERVICES, LLC – no yes
248-246 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI – yes yes
248-259 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2001-05-02 yes yes
248-268 Comcast COMCAST IP PHONE, LLC 2013-04-05 yes yes
248-280 AT&T MICHIGAN BELL TEL CO – no yes
248-284 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI – yes yes
248-288 AT&T MICHIGAN BELL TEL CO – no yes
248-291 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI – yes yes
248-298 Windstream PAETEC ITEL, LLC – yes yes
248-300 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2024-12-30 yes yes
248-307 AT&T MICHIGAN BELL TEL CO – yes yes
248-316 Spok SPOK, INC. – no yes
248-317 Spok SPOK, INC. – no yes
248-336 AT&T MICHIGAN BELL TEL CO – no yes
248-367 American Messaging AMERICAN MESSAGING SERVICES, LLC – no yes
248-376 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
248-397 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI – yes yes
248-398 AT&T MICHIGAN BELL TEL CO – no yes
248-399 AT&T MICHIGAN BELL TEL CO – no yes
248-401 Spok SPOK, INC. – no yes
248-405 Spok SPOK, INC. – no yes
248-414 AT&T MICHIGAN BELL TEL CO – yes yes
248-435 AT&T MICHIGAN BELL TEL CO – no yes
248-439 WOW! INTERNET, CABLE AND PHONE 2007-07-17 yes yes
248-506 T-Mobile METROPCS, INC. – yes yes
248-541 AT&T MICHIGAN BELL TEL CO – no yes
248-542 AT&T MICHIGAN BELL TEL CO – no yes
248-543 AT&T MICHIGAN BELL TEL CO – no yes
248-544 AT&T MICHIGAN BELL TEL CO – no yes
248-545 AT&T MICHIGAN BELL TEL CO – no yes
248-546 AT&T MICHIGAN BELL TEL CO – no yes
248-547 AT&T MICHIGAN BELL TEL CO – no yes
248-548 AT&T MICHIGAN BELL TEL CO – no yes
248-549 AT&T MICHIGAN BELL TEL CO – no yes
248-551 AT&T MICHIGAN BELL TEL CO – no yes
248-554 AT&T MICHIGAN BELL TEL CO – yes yes
248-556 Windstream PAETEC ITEL, LLC 2005-03-14 yes yes
248-565 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI – yes yes
248-571 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2014-09-10 yes yes
248-577 AT&T MICHIGAN BELL TEL CO – no yes
248-581 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI – yes yes
248-582 AT&T MICHIGAN BELL TEL CO – yes yes
248-583 AT&T MICHIGAN BELL TEL CO – no yes
248-584 AT&T MICHIGAN BELL TEL CO – no yes
248-585 AT&T MICHIGAN BELL TEL CO – no yes
248-586 AT&T MICHIGAN BELL TEL CO – yes yes
248-588 AT&T MICHIGAN BELL TEL CO – no yes
248-589 AT&T MICHIGAN BELL TEL CO – no yes
248-591 AT&T MICHIGAN BELL TEL CO – yes yes
248-597 AT&T MICHIGAN BELL TEL CO – no yes
248-607 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI 2014-10-03 yes yes
248-616 AT&T MICHIGAN BELL TEL CO – yes yes
248-629 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI – yes yes
248-632 T-Mobile METROPCS, INC. – yes yes
248-654 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI – yes yes
248-655 AT&T MICHIGAN BELL TEL CO – yes yes
248-658 Windstream PAETEC ITEL, LLC – yes yes
248-677 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI – yes yes
248-691 AT&T MICHIGAN BELL TEL CO – yes yes
248-721 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI – yes yes
248-733 AT&T MICHIGAN BELL TEL CO – yes yes
248-744 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI – yes yes
248-761 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
248-776 123.NET, LLC – no yes
248-797 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
248-808 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2001-06-28 yes yes
248-810 Onvoy ONVOY, LLCV - MI 2023-07-26 yes yes
248-837 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI – yes yes
248-850 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2006-02-28 yes yes
248-890 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
248-898 AT&T MICHIGAN BELL TEL CO – no yes
248-951 Onvoy ONVOY, LLCV - MI 2015-09-04 yes yes
248-955 Windstream PAETEC ITEL, LLC – yes yes
248-965 Comcast COMCAST IP PHONE, LLC 2015-08-20 yes yes
248-967 AT&T MICHIGAN BELL TEL CO – no yes
248-968 AT&T MICHIGAN BELL TEL CO – no yes
248-990 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2002-03-12 no yes
248-992 American Messaging AMERICAN MESSAGING SERVICES, LLC – no yes
248-995 American Messaging AMERICAN MESSAGING SERVICES, LLC 2004-07-21 no yes
248-998 American Messaging AMERICAN MESSAGING SERVICES, LLC – no 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

HolderBrandBlocksShare here
MICHIGAN BELL TEL CO AT&T 36 42.9%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 12 14.3%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI Verizon 6 7.1%
LEVEL 3 COMMUNICATIONS, LLC - MI Lumen 5 6%
AMERICAN MESSAGING SERVICES, LLC American Messaging 5 6%
PAETEC ITEL, LLC Windstream 4 4.8%
SPOK, INC. Spok 4 4.8%
TELEPORT COMMUNICATIONS AMERICA, LLC - MI AT&T 3 3.6%
COMCAST IP PHONE, LLC Comcast 2 2.4%
METROPCS, INC. T-Mobile 2 2.4%
ONVOY, LLCV - MI Onvoy 2 2.4%
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC T-Mobile 1 1.2%
WOW! INTERNET, CABLE AND PHONE – 1 1.2%
123.NET, LLC – 1 1.2%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to ROYAL OAK in area code 248?

84 blocks: 206, 217, 219, 224, 235, 246, 259, 268, 280, 284, 288, 291 and 72 more, all listed in the table above.

Which carriers have numbers in ROYAL OAK?

MICHIGAN BELL TEL CO (36 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (12 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI (6 blocks), LEVEL 3 COMMUNICATIONS, LLC - MI (5 blocks), AMERICAN MESSAGING SERVICES, LLC (5 blocks), PAETEC ITEL, LLC (4 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is ROYAL OAK 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.

Other rate centers in 248

All 784 prefixes in 248