Prefix 205-666 — Birmingham, AL

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

Area code
205
Prefix (NXX)
666
Rate center
Birmingham
State
Alabama
Time zone
Central
Code holder
ONVOY, LLC - AL
OCN
604E
Pooled
Yes (thousands-block pooling)
Assigned
2016-03-08
LATA
476

A phone number starting 205-666 was issued in the Birmingham rate center of AL — part of area code 205.

Code-holder of record: ONVOY, LLC - AL (OCN 604E), assigned March 8, 2016. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 205-666 numbers may be served by different companies.

A scammer can display 205-666 without ever touching AL. When in doubt, end the call and reach the company or agency through its official website; unwanted robocalls belong in the FTC's fraud report queue.

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

Neighboring prefixes

Prefixes adjacent to 205-666
PrefixRate centerCode holder
205-663 Alabaster BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL
205-664 Alabaster BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL
205-665 Montevallo BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL
205-667 Birmingham BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL
205-668 Calera BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL
205-669 Columbiana BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL

FAQ

Where is 205-666 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 205-666 numbers?

ONVOY, LLC - AL 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 205-666 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.