NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

7 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 918
NEW CINGULAR WIRELESS PCS, LLC - IL 5
BOOST SUBSCRIBERCO L.L.C. 1
BANDWIDTH.COM CLEC, LLC - OK 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
2013-10-11 918-991-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2013-10-01 918-871-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 TAHLEQUAH OK
2013-09-17 918-609-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 OWASSO OK
2013-09-17 918-921-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 TULSA OK
2013-08-07 918-564-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 POTEAU OK
2013-07-22 918-947-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J TULSA OK
2013-07-17 918-480-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 SPERRY OK
2013-07-12 918-928-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J OWASSO OK
2013-07-08 918-350-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2013-07-08 918-350-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2013-07-08 918-350-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2013-07-03 918-921-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 TULSA OK
2013-06-17 918-817-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C SALLISAW OK
2013-06-14 918-393-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C MULDROW OK
2013-06-14 918-782-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 KETCHUM OK
2013-06-14 918-791-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 GROVE OK
2013-06-05 918-558-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 7258 MCALESTER OK
2013-06-04 918-319-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HENRYETTA OK
2013-05-30 918-558-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C MCALESTER OK
2013-05-30 918-921-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 TULSA OK
2013-05-29 918-917-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F WILBURTON OK
2013-05-20 918-841-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2013-05-20 918-841-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2013-05-15 918-215-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F SAND SPG OK
2013-05-06 918-219-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AFTON OK
2013-04-17 918-467-1XXX 1000–1999Assigned SOUTHWESTERN BELL 9533 DELAWARE OK
2013-04-17 918-567-1XXX 1000–1999Assigned SOUTHWESTERN BELL 9533 TALIHINA OK
2013-04-11 918-216-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F SAPULPA OK
2013-04-11 918-901-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F TULSA OK
2013-04-11 918-901-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F TULSA OK
2013-04-11 918-901-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F TULSA OK
2013-04-11 918-921-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F TULSA OK
2013-04-11 918-921-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F TULSA OK
2013-04-05 918-917-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 WILBURTON OK
2013-04-02 918-223-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 CUSHING OK
2013-04-01 918-893-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J BROKENARRW OK
2013-03-19 918-921-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J TULSA OK
2013-03-19 918-954-1XXX 1000–1999Assigned NUSO, LLC 551G TULSA OK
2013-03-05 918-841-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2013-02-25 918-401-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 7258 OWASSO OK
2013-02-21 918-817-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SALLISAW OK
2013-02-20 918-863-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2013-02-20 918-863-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2013-02-20 918-863-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2013-02-20 918-984-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2013-02-15 918-246-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SAND SPG OK
2013-02-15 918-819-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F NEW HOME OK
2013-02-15 918-819-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F NEW HOME OK
2013-02-06 918-921-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J TULSA OK
2013-02-05 918-915-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 VINITA OK

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.