734 area code — Ann Arbor, MI geographic
Phone numbers beginning 734 are registered to the Ann Arbor area of Michigan (Eastern time zone). The code entered service on December 13, 1997. The same territory is also served by its overlay code (679/734 complex). Keep in mind the code identifies where the number was registered; the person calling may be elsewhere.
The code currently holds 699 working prefixes, held by 39 different carriers. Of these, 493 are pooled prefixes shared by multiple carriers. Numbers are anchored to 33 rate centers — billing localities that fix where each prefix belongs.
To check where a specific 734 number was issued, look up its six-digit prefix; to check who is actually calling, ignore the display and verify through an official callback number — caller ID is assertable and routinely spoofed.
The code was carved out of 313 (1997).
The current NANPA exhaust forecast is 4Q 2044.
Local calls inside 734 are dialed 7D.
Largest localities in 734
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Ann Arbor | 133 | — |
| Livonia | 64 | — |
| Wayne | 60 | — |
| Ypsilanti | 52 | — |
| Plymouth | 43 | — |
| Monroe | 40 | — |
| Wyandotte | 38 | — |
| Trenton | 27 | — |
| Romulus | 24 | — |
| Dexter | 16 | — |
FAQ
Is 734 a toll-free number?
No. 734 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.
Why do 679 and 734 cover the same place?
They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 679/734 complex shares one service area, and local calls are dialed with 10 digits.
Will 734 run out of numbers?
NANPA's current forecast projects exhaust in 4Q 2044 — decades of capacity remain.