NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, all time — NPA 580
PANHANDLE TELEPHONE COOPERATIVE, INC. 24
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 580-253 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 ADAMS OK
— 580-259 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 FLORIS OK
— 580-261 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 KENTON OK
— 580-338 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 GUYMON OK
— 580-349 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 GOODWELL OK
— 580-361 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 BRYANS COR OK
— 580-423 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 TEXHOMA OK
— 580-426 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 FELTWHLESS OK
— 580-468 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 GUYMON OK
— 580-487 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 FORGAN OK
— 580-533 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 SO ENGLEWD OK
— 580-543 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 GRIGGS OK
— 580-544 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 BOISE CITY OK
— 580-545 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 EVA OK
— 580-546 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 KEYES OK
— 580-625 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 BEAVER OK
— 580-646 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 BALKO OK
— 580-652 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 HOOKER OK
— 580-778 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 TURPIN OK
— 580-837 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 LOGAN OK
— 580-854 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 TYRONE OK
— 580-888 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 HARDESTY OK
— 580-921 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 LAVERNE OK
— 580-934 not yet reported which blocks → PANHANDLE TELEPHONE COOPERATIVE, INC. 2016 GATE OK

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.