NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

67 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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
2017-01-31 479-225-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FAYETTEVL AR
2017-01-25 479-347-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SPRINGDALE AR
2017-01-23 479-367-8XXX 8000–8999Assigned SOUTHWESTERN BELL 9533 BENTONVL AR
2017-01-23 479-925-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ROGERS AR
2017-01-18 479-551-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L FORT SMITH AR
2017-01-04 479-402-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTONVL AR
2017-01-04 479-402-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTONVL AR
2017-01-04 479-402-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTONVL AR
2017-01-04 479-402-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTONVL AR
2017-01-04 479-402-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTONVL AR
2017-01-04 479-402-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTONVL AR
2017-01-04 479-402-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTONVL AR
2017-01-04 479-402-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTONVL AR
2016-12-21 479-313-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J FAYETTEVL AR
2016-12-13 479-231-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 SPRINGDALE AR
2016-12-05 479-966-8XXX 8000–8999Assigned METROPCS, INC. 5562 FAYETTEVL AR
2016-11-22 479-333-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 ELMSPRINGS AR
2016-11-22 479-404-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FAYETTEVL AR
2016-11-21 479-224-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CENTERTON AR
2016-11-17 479-401-9XXX 9000–9999Assigned METROPCS, INC. 5562 FORT SMITH AR
2016-09-20 479-401-3XXX 3000–3999Assigned SOUTHWESTERN BELL 9533 FORT SMITH AR
2016-09-19 479-877-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J ROGERS AR
2016-09-01 479-616-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 ROGERS AR
2016-09-01 479-616-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 ROGERS AR
2016-09-01 479-633-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 ROGERS AR
2016-09-01 479-659-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 ROGERS AR
2016-09-01 479-721-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 ROGERS AR
2016-08-24 479-431-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 7277 FORT SMITH AR
2016-08-17 479-322-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C GREENWOOD AR
2016-08-17 479-402-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTONVL AR
2016-08-17 479-407-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALMA AR
2016-08-16 479-220-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SILOAM SPG AR
2016-08-15 479-347-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SPRINGDALE AR
2016-08-12 479-313-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J FAYETTEVL AR
2016-08-11 479-312-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALMA AR
2016-08-11 479-876-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTONVL AR
2016-08-04 479-319-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTONVL AR
2016-08-04 479-319-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTONVL AR
2016-08-04 479-319-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTONVL AR
2016-08-04 479-319-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTONVL AR
2016-07-26 479-317-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 RUSSELLVL AR
2016-07-26 479-317-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 RUSSELLVL AR
2016-07-26 479-317-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 RUSSELLVL AR
2016-07-07 479-255-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HACKETT AR
2016-07-07 479-789-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HINDSVILLE AR
2016-06-20 479-401-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 FORT SMITH AR
2016-06-20 479-401-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 FORT SMITH AR
2016-06-16 479-262-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F VAN BUREN AR
2016-06-16 479-777-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AR 196F MENA AR
2016-06-15 479-365-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPRINGDALE AR

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.