Alabama area codes — detailed data

NANPA NPA database, current as of July 28, 2026.

Full numbering detail for every active Alabama area code: lineage (which code it split from), NANPA exhaust projections, dialing plans and jeopardy status. This is the working data behind the overview page.

Aggregate footprint: the state's 7 geographic codes currently carry 3,211 active NXX prefixes over 417 rate-center anchorings, with 2,310 prefixes in thousands-block pooling. 6 of the codes serve territory inside FCC top-100 metropolitan statistical areas.

Lineage: 251 came out of 334 in 2001; 256 came out of 205 in 1998; 334 came out of 205 in 1995; 483 came out of 334 in 2026; 659 came out of 205 in 2019; 938 came out of 256 in 2010. The remaining code (205) dates back to the plan's early assignments.

Dialing plans: 7 codes use plain ten-digit local dialing (10D). Overlay territories always dial ten digits; the 2021 988-hotline transition moved most others to ten digits as well.

The tightest capacity in the state is 251, projected to exhaust 1Q 2039.

Status: no Alabama code is currently in jeopardy or active relief planning — capacity is adequate near-term per NANPA.

Code-by-code notes

256 — spawned 938; carved from 205; overlaid by 938; exhaust forecast 2Q 2043.

205 — spawned 334, 256, 659; overlaid by 659; exhaust forecast 1Q 2066.

334 — spawned 251, 483; carved from 205; overlaid by 483; exhaust forecast 3Q 2064.

251 — carved from 334; exhaust forecast 1Q 2039.

659 — carved from 205; overlaid by 205; exhaust forecast 1Q 2066.

938 — carved from 256; overlaid by 256; exhaust forecast 2Q 2043.

483 — carved from 334; overlaid by 334; exhaust forecast 3Q 2064.