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

SOUTH LYON prefixes in area code 248

NANPA records 12 assigned NXX blocks to rate center SOUTH LYON in area code 248, 1.5% 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. 8 holders hold those blocks, the largest being MICHIGAN BELL TEL CO (3), METROPCS, INC. (2), LEVEL 3 COMMUNICATIONS, LLC - MI (2). The earliest assignment on record here is 2002-04-02 and the most recent 2015-04-13. 9 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.

12 assigned blocks – 1.5% of 248
8 holders of record
9 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
248-264 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI – yes yes
248-278 T-Mobile METROPCS, INC. 2011-05-13 yes yes
248-437 AT&T MICHIGAN BELL TEL CO – no yes
248-446 AT&T MICHIGAN BELL TEL CO – yes yes
248-486 AT&T MICHIGAN BELL TEL CO – no yes
248-491 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI – yes yes
248-493 INTERACTIVE SERVICES NETWORK, INC. 2002-04-02 no yes
248-573 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI – yes yes
248-587 Windstream PAETEC ITEL, LLC – yes yes
248-617 Comcast COMCAST IP PHONE, LLC 2015-04-13 yes yes
248-667 T-Mobile METROPCS, INC. – yes yes
248-782 Lumen LEVEL 3 COMMUNICATIONS, LLC - MI – 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

HolderBrandBlocksShare here
MICHIGAN BELL TEL CO AT&T 3 25%
METROPCS, INC. T-Mobile 2 16.7%
LEVEL 3 COMMUNICATIONS, LLC - MI Lumen 2 16.7%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI Verizon 1 8.3%
INTERACTIVE SERVICES NETWORK, INC. – 1 8.3%
TELEPORT COMMUNICATIONS AMERICA, LLC - MI AT&T 1 8.3%
PAETEC ITEL, LLC Windstream 1 8.3%
COMCAST IP PHONE, LLC Comcast 1 8.3%

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 SOUTH LYON in area code 248?

12 blocks: 264, 278, 437, 446, 486, 491, 493, 573, 587, 617, 667, 782. The table above gives the holder of each.

Which carriers have numbers in SOUTH LYON?

MICHIGAN BELL TEL CO (3 blocks), METROPCS, INC. (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - MI (2 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI (1 block), INTERACTIVE SERVICES NETWORK, INC. (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC - 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 SOUTH LYON 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