Prefix 205-420 — Birmingham, AL

NANPA CO code assignment, current as of July 28, 2026.

Area code
205
Prefix (NXX)
420
Rate center
Birmingham
State
Alabama
Time zone
Central
Code holder
BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL
OCN
9419
Pooled
Yes (thousands-block pooling)
Assigned
2002-03-21
LATA
476

The 205-420 prefix belongs to area code 205 and is anchored to the Birmingham rate center (AL). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.

Birmingham is part of the Birmingham, AL Metropolitan Statistical Area. For routing purposes it sits in LATA 476. Numbers here keep Central time.

NANPA's central-office code records list BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL (OCN 9419) as the code holder, assigned March 21, 2002. Because 205-420 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.

Caller ID showing 205-420 is not proof the call came from Birmingham: spoofing and porting both detach numbers from their origin. To verify a caller, hang up and dial the organization's published number, and report suspicious calls to the FTC.

Neighboring prefixes

Prefixes adjacent to 205-420
PrefixRate centerCode holder
205-417 Bessemer PAETEC ITEL, LLC
205-418 Gardendale PAETEC ITEL, LLC
205-419 Alabaster LEVEL 3 COMMUNICATIONS, LLC - AL
205-421 Birmingham TELEPORT COMMUNICATIONS AMERICA, LLC - AL
205-422 Birmingham POWERTEL BIRMINGHAM LICENSES, INC.
205-423 Birmingham BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL

FAQ

Where is 205-420 located?

The prefix is assigned to the Birmingham rate center in AL, area code 205. It is part of the Birmingham, AL Metropolitan Statistical Area.

Which company owns 205-420 numbers?

BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL holds the code, but the prefix is pooled — individual thousands-blocks can be assigned to other carriers, and numbers may be ported to any provider.

Is a call from 205-420 safe to answer?

The prefix itself says nothing about the caller. Legitimate Birmingham businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.