Number holder
Michigan Bell Tel
NANPA assigned Michigan Bell Tel 1,411 of the 197,646 central office codes in service, <1% of the total. Rank 28 of 36 listed holders.
What kind of holder this is
Landline telephone company. AT&T's consumer service terms name Michigan Bell Telephone Company among the AT&T companies that provide AT&T Phone Service, a wireline home phone service. Source page, read 2026-10-19.
Prefixes held
Prefixes held
1,411
of 197,646 in service (<1%)
States and territories
1
Area codes
11
Pooled prefixes
597
42% of its prefixes
Registered as Michigan Bell Tel CO, under 1 operating company number.
Prefixes by state or territory
| State or territory | Prefixes |
|---|---|
| MI | 1,411 |
Prefixes by area code
Read this before you rely on it
The holder is the company NANPA assigned the codes to, under the legal name it registered. That name can differ from the brand customers see, and one brand can hold codes under several legal names.
Numbers port. A number in one of these prefixes may now be with another carrier, so the prefix alone does not say who serves it today. To see the holder of the block behind a number, use the carrier lookup.
Source: NANPA central office code report dated 2026-10-17 and thousands-block report dated 2026-10-17.