NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

10 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 217
ONVOY, LLC 3
NEW CINGULAR WIRELESS PCS, LLC - IL 3
EXIANT COMMUNICATIONS LLC 3
OPENTACT INC. 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
2018-06-28 217-284-1XXX 1000–1999Assigned TELNYX LLC 073H INDIANOLA IL
2018-06-28 217-393-1XXX 1000–1999Assigned TELNYX LLC 073H CATLIN IL
2018-06-28 217-487-1XXX 1000–1999Assigned TELNYX LLC 073H CANTRALL IL
2018-06-28 217-501-1XXX 1000–1999Assigned TELNYX LLC 073H PETERSBURG IL
2018-06-28 217-559-0XXX 0000–0999Assigned TELNYX LLC 073H WESTVILLE IL
2018-06-28 217-629-6XXX 6000–6999Assigned TELNYX LLC 073H RIVERTON IL
2018-06-28 217-634-1XXX 1000–1999Assigned TELNYX LLC 073H TALLULA IL
2018-06-28 217-635-0XXX 0000–0999Assigned TELNYX LLC 073H OAKFORD IL
2018-06-28 217-952-9XXX 9000–9999Assigned TELNYX LLC 073H ATHENS IL
2018-06-28 217-963-9XXX 9000–9999Assigned TELNYX LLC 073H HARRISTOWN IL
2018-06-28 217-996-0XXX 0000–0999Assigned TELNYX LLC 073H OAKWOOD IL
2018-06-26 217-394-5XXX 5000–5999Assigned ONVOY, LLC 224C BUCKLEY IL
2018-06-26 217-397-6XXX 6000–6999Assigned ONVOY, LLC 224C RANKIN IL
2018-06-18 217-203-4XXX 4000–4999Assigned ONVOY, LLC 224C BUFFALO IL
2018-06-18 217-207-8XXX 8000–8999Assigned ONVOY, LLC 224C ST JOSEPH IL
2018-06-18 217-212-0XXX 0000–0999Assigned TELNYX LLC 073H FITHIAN IL
2018-06-18 217-574-1XXX 1000–1999Assigned TELNYX LLC 073H FAIRMOUNT IL
2018-06-13 217-903-0XXX 0000–0999Assigned VONAGE AMERICA LLC 197D CHAMPAURBN IL
2018-06-12 217-606-0XXX 0000–0999Assigned VONAGE AMERICA LLC 197D SPRINGFLD IL
2018-06-06 217-703-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DANVILLE IL
2018-05-29 217-997-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ARENZVILLE IL
2018-05-23 217-250-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 LITCHFIELD IL
2018-05-23 217-500-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 7196 EFFINGHAM IL
2018-04-13 217-518-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARCOLA IL
2018-04-13 217-518-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARCOLA IL
2018-04-13 217-518-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARCOLA IL
2018-04-13 217-518-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARCOLA IL
2018-04-13 217-518-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARCOLA IL
2018-04-13 217-518-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARCOLA IL
2018-03-26 217-590-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MAHOMET IL
2018-03-26 217-602-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSONVL IL
2018-03-23 217-209-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 QUINCY IL
2018-03-16 217-640-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 QUINCY IL
2018-03-13 217-729-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 CHAMPAURBN IL
2018-03-08 217-742-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WINCHESTER IL
2018-03-07 217-216-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 RUSHVILLE IL
2018-02-28 217-850-8XXX 8000–8999Assigned EXIANT COMMUNICATIONS LLC 114J CHAMPAURBN IL
2018-02-28 217-993-3XXX 3000–3999Assigned EXIANT COMMUNICATIONS LLC 114J SPRINGFLD IL
2018-02-23 217-504-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DANVILLE IL
2018-02-23 217-554-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DANVILLE IL
2018-02-23 217-909-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 BEARDSTOWN IL
2018-02-20 217-746-4XXX 4000–4999Assigned MTC COMMUNICATIONS, INC. - IL 342F FERRIS IL
2018-02-07 217-247-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IL 6115 RIDGE FARM IL
2018-01-30 217-471-7XXX 7000–7999Assigned ONVOY, LLC 224C ROCHESTER IL
2018-01-30 217-516-4XXX 4000–4999Assigned ONVOY, LLC 224C DANVILLE IL
2018-01-30 217-869-8XXX 8000–8999Assigned NUSO, LLC 551G JACKSONVL IL
2018-01-19 217-250-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LITCHFIELD IL
2018-01-19 217-250-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LITCHFIELD IL
2018-01-19 217-518-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARCOLA IL
2018-01-19 217-518-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARCOLA IL

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.