NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

67 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 479
NEW CINGULAR WIRELESS PCS, LLC - IL 40
ONVOY, LLC - AR 13
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 10
INTRADO COMMUNICATIONS, LLC 2
TELNYX LLC 1
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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2011-07-26 479-358-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FORT SMITH AR
2011-07-26 479-358-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 FORT SMITH AR
2011-07-13 479-668-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FORT SMITH AR
2011-07-05 479-282-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROGERS AR
2011-07-05 479-282-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROGERS AR
2011-06-17 479-689-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C VAN BUREN AR
2011-06-03 479-237-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 RUSSELLVL AR
2011-05-31 479-249-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 FAYETTEVL AR
2011-05-31 479-249-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 FAYETTEVL AR
2011-05-31 479-249-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 FAYETTEVL AR
2011-05-31 479-249-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FAYETTEVL AR
2011-05-31 479-249-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 FAYETTEVL AR
2011-05-31 479-280-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 RUSSELLVL AR
2011-05-31 479-310-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 FORT SMITH AR
2011-05-31 479-310-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 FORT SMITH AR
2011-05-31 479-310-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FORT SMITH AR
2011-05-31 479-310-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 FORT SMITH AR
2011-05-31 479-668-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 FORT SMITH AR
2011-05-31 479-668-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FORT SMITH AR
2011-05-31 479-668-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 FORT SMITH AR
2011-05-31 479-668-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 FORT SMITH AR
2011-05-31 479-668-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 FORT SMITH AR
2011-05-31 479-668-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FORT SMITH AR
2011-05-31 479-755-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J FORT SMITH AR
2011-05-31 479-800-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 FAYETTEVL AR
2011-05-20 479-208-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F VAN BUREN AR
2011-05-17 479-251-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 FAYETTEVL AR
2011-05-16 479-755-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 FORT SMITH AR
2011-04-25 479-222-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J FORT SMITH AR
2011-04-25 479-249-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J FAYETTEVL AR
2011-04-21 479-262-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J VAN BUREN AR
2011-04-19 479-202-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROGERS AR
2011-04-19 479-202-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROGERS AR
2011-04-19 479-445-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FAYETTEVL AR
2011-04-19 479-463-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FAYETTEVL AR
2011-04-19 479-463-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FAYETTEVL AR
2011-04-19 479-571-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FAYETTEVL AR
2011-04-19 479-595-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FAYETTEVL AR
2011-04-19 479-595-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FAYETTEVL AR
2011-04-19 479-684-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FAYETTEVL AR
2011-04-19 479-684-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FAYETTEVL AR
2011-04-12 479-259-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 FORT SMITH AR
2011-04-12 479-259-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 FORT SMITH AR
2011-04-12 479-259-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 FORT SMITH AR
2011-04-12 479-289-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C FORT SMITH AR
2011-04-08 479-866-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 BENTONVL AR
2011-03-30 479-259-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F FORT SMITH AR
2011-03-30 479-259-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F FORT SMITH AR
2011-03-25 479-276-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ALMA AR
2011-03-23 479-323-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C GRAVETTE AR

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.