NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

4 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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, last 30 days
INTRADO COMMUNICATIONS, LLC 4
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
2026-09-18 559-873 3XXX which blocks → INTRADO COMMUNICATIONS, LLC 808C VISALIA CA
2026-09-18 559-971 1XXX which blocks → INTRADO COMMUNICATIONS, LLC 808C CLOVIS CA
2026-09-09 861-444 4XXX which blocks → INTRADO COMMUNICATIONS, LLC 816C PEORIA IL
2026-09-03 943-587 8XXX which blocks → INTRADO COMMUNICATIONS, LLC 814C ATLANTA GA
2026-08-14 928-922 2XXX which blocks → INTRADO COMMUNICATIONS, LLC 890G TUBA CITY AZ
2020-04-21 234-271 0–9 XXXall 10 · 4 holders which blocks → INTRADO COMMUNICATIONS, LLC 9557 AKRON OH
2020-04-21 407-974 0–9 XXXall 10 · 3 holders which blocks → INTRADO COMMUNICATIONS, LLC 813C ORLANDO FL
2020-03-31 401-296 0–9 XXXall 10 · 6 holders which blocks → INTRADO COMMUNICATIONS, LLC 836C PROVIDENCE RI
2020-03-31 901-506 0–9 XXXall 10 · 3 holders which blocks → INTRADO COMMUNICATIONS, LLC 845C MEMPHIS TN
2020-03-31 989-320 0–9 XXXall 10 · 4 holders which blocks → INTRADO COMMUNICATIONS, LLC 821C SAGINAW MI
2020-03-26 502-586 0–9 XXXall 10 · 2 holders which blocks → INTRADO COMMUNICATIONS, LLC 861C LOUISVILLE KY
2020-03-25 413-368 0–9 XXXall 10 · 3 holders which blocks → INTRADO COMMUNICATIONS, LLC 116E SPRINGFLD MA
2020-03-24 208-992 0–9 XXXall 10 · 4 holders which blocks → INTRADO COMMUNICATIONS, LLC 815C BOISE ID
2020-01-13 332-221 0–9 XXXwhole prefix which blocks → INTRADO COMMUNICATIONS, LLC 831C NWYRCYZN01 NY
2019-04-17 929-517 0–9 XXXall 10 · 4 holders which blocks → INTRADO COMMUNICATIONS, LLC 831C NWYRCYZN06 NY
2015-09-18 862-298 0–9 XXXall 10 · 5 holders which blocks → INTRADO COMMUNICATIONS, LLC 829C NEWARK NJ
2015-09-03 602-585 0–9 XXXall 10 · 3 holders which blocks → INTRADO COMMUNICATIONS, LLC 890G PHOENIX AZ
2014-12-26 856-249 0–9 XXXall 10 · 5 holders which blocks → INTRADO COMMUNICATIONS, LLC 829C CAMDEN NJ
2014-12-23 215-372 0–9 XXXall 10 · 5 holders which blocks → INTRADO COMMUNICATIONS, LLC 835C PHLDLPHZN1 PA
2014-12-23 443-961 0–9 XXXall 10 · 3 holders which blocks → INTRADO COMMUNICATIONS, LLC 820C BALTIMORE MD
2014-12-23 520-809 0–9 XXXall 10 · 5 holders which blocks → INTRADO COMMUNICATIONS, LLC 890G TUCSON AZ
2014-12-23 602-554 0–9 XXXall 10 · 3 holders which blocks → INTRADO COMMUNICATIONS, LLC 890G PHOENIX AZ
2014-12-23 857-770 0–9 XXXall 10 · 5 holders which blocks → INTRADO COMMUNICATIONS, LLC 116E BOSTON MA
2013-08-30 402-702 0–9 XXXwhole prefix which blocks → INTRADO COMMUNICATIONS, LLC 826C OMAHA NE
2013-08-30 720-405 0–9 XXXwhole prefix which blocks → INTRADO COMMUNICATIONS, LLC 809C DENVER CO
2012-02-16 915-777 0–9 XXXall 10 · 3 holders which blocks → INTRADO COMMUNICATIONS, LLC 9558 EL PASO TX
2012-02-08 206-596 0–9 XXXall 10 · 4 holders which blocks → INTRADO COMMUNICATIONS, LLC 841C SEATTLE WA
2010-08-18 917-268 0–9 XXXall 10 · 2 holders which blocks → INTRADO COMMUNICATIONS, LLC 831C NWYRCYZN06 NY
2010-08-17 813-525 0–9 XXXall 10 · 3 holders which blocks → INTRADO COMMUNICATIONS, LLC 813C TAMPACEN FL
2003-02-25 760-699 0–9 XXXall 10 · 6 holders which blocks → INTRADO COMMUNICATIONS, LLC 808C PALM SPG CA
2003-02-24 702-374 0–9 XXXall 10 · 2 holders which blocks → INTRADO COMMUNICATIONS, LLC 827C LAS VEGAS NV
2003-02-20 845-594 0–9 XXXall 10 · 2 holders which blocks → INTRADO COMMUNICATIONS, LLC 831C KINGSTON NY
2002-06-18 574-990 none assigned yet which blocks → INTRADO COMMUNICATIONS, LLC 817C SOUTH BEND IN
2002-05-16 360-550 0–9 XXXall 10 · 4 holders which blocks → INTRADO COMMUNICATIONS, LLC 841C BREMERTON WA
2002-05-16 360-562 0–9 XXXall 10 · 6 holders which blocks → INTRADO COMMUNICATIONS, LLC 834C LONGVIEW WA
2002-04-16 509-844 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → INTRADO COMMUNICATIONS, LLC 841C SPOKANE WA
2002-02-21 865-275 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → INTRADO COMMUNICATIONS, LLC 845C OAK RIDGE TN
— 504-638 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → INTRADO COMMUNICATIONS, LLC 819C NEWORLEANS LA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.