NumberResearchRecent thousands-block assignments
29 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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 551
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
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2018-09-17 | 551-285-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF NEW JERSEY, LP - NJ | 2771 | RUTHERFORD | NJ |
| 2018-09-14 | 551-287-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | NJ |
| 2018-09-14 | 551-287-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | NJ |
| 2018-09-14 | 551-287-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | NJ |
| 2018-09-12 | 551-557-1XXX | 1000–1999 | Assigned | BLUEBIRD COMMUNICATIONS, LLC - NJ | 999H | PARK RIDGE | NJ |
| 2018-09-11 | 551-284-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | RIDGEWOOD | NJ |
| 2018-09-10 | 551-230-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | ENGLEWOOD | NJ |
| 2018-09-10 | 551-266-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | FAIR LAWN | NJ |
| 2018-09-07 | 551-210-0XXX | 0000–0999 | Assigned | BLUEBIRD COMMUNICATIONS, LLC - NJ | 999H | DUMONT | NJ |
| 2018-09-07 | 551-212-2XXX | 2000–2999 | Assigned | BLUEBIRD COMMUNICATIONS, LLC - NJ | 999H | TEANECK | NJ |
| 2018-09-07 | 551-230-5XXX | 5000–5999 | Assigned | BLUEBIRD COMMUNICATIONS, LLC - NJ | 999H | ENGLEWOOD | NJ |
| 2018-09-07 | 551-231-4XXX | 4000–4999 | Assigned | BLUEBIRD COMMUNICATIONS, LLC - NJ | 999H | OAKLAND | NJ |
| 2018-09-07 | 551-239-5XXX | 5000–5999 | Assigned | BLUEBIRD COMMUNICATIONS, LLC - NJ | 999H | CLIFFSIDE | NJ |
| 2018-09-07 | 551-250-2XXX | 2000–2999 | Assigned | BLUEBIRD COMMUNICATIONS, LLC - NJ | 999H | FAIR LAWN | NJ |
| 2018-09-07 | 551-272-2XXX | 2000–2999 | Assigned | BLUEBIRD COMMUNICATIONS, LLC - NJ | 999H | LEONIA | NJ |
| 2018-09-07 | 551-279-5XXX | 5000–5999 | Assigned | BLUEBIRD COMMUNICATIONS, LLC - NJ | 999H | RAMSEY | NJ |
| 2018-09-07 | 551-280-1XXX | 1000–1999 | Assigned | BLUEBIRD COMMUNICATIONS, LLC - NJ | 999H | JERSEYCITY | NJ |
| 2018-09-07 | 551-282-2XXX | 2000–2999 | Assigned | BLUEBIRD COMMUNICATIONS, LLC - NJ | 999H | WESTWOOD | NJ |
| 2018-09-07 | 551-284-5XXX | 5000–5999 | Assigned | BLUEBIRD COMMUNICATIONS, LLC - NJ | 999H | RIDGEWOOD | NJ |
| 2018-09-07 | 551-285-5XXX | 5000–5999 | Assigned | BLUEBIRD COMMUNICATIONS, LLC - NJ | 999H | RUTHERFORD | NJ |
| 2018-09-07 | 551-286-6XXX | 6000–6999 | Assigned | BLUEBIRD COMMUNICATIONS, LLC - NJ | 999H | HACKENSACK | NJ |
| 2018-09-07 | 551-300-5XXX | 5000–5999 | Assigned | BLUEBIRD COMMUNICATIONS, LLC - NJ | 999H | UNION CITY | NJ |
| 2018-09-07 | 551-319-3XXX | 3000–3999 | Assigned | BLUEBIRD COMMUNICATIONS, LLC - NJ | 999H | WYCKOFF | NJ |
| 2018-09-07 | 551-399-3XXX | 3000–3999 | Assigned | BLUEBIRD COMMUNICATIONS, LLC - NJ | 999H | BAYONNE | NJ |
| 2018-09-07 | 551-722-2XXX | 2000–2999 | Assigned | BLUEBIRD COMMUNICATIONS, LLC - NJ | 999H | HASBROKHTS | NJ |
| 2018-09-06 | 551-231-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | OAKLAND | NJ |
| 2018-09-04 | 551-212-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 264F | TEANECK | NJ |
| 2018-09-04 | 551-272-4XXX | 4000–4999 | Assigned | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 264F | LEONIA | NJ |
| 2018-08-29 | 551-285-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | RUTHERFORD | NJ |
| 2018-08-29 | 551-285-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | RUTHERFORD | NJ |
| 2018-08-27 | 551-285-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | RUTHERFORD | NJ |
| 2018-08-27 | 551-285-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | RUTHERFORD | NJ |
| 2018-08-24 | 551-286-1XXX | 1000–1999 | Assigned | CABLEVISION LIGHTPATH, INC. - NJ | 4948 | HACKENSACK | NJ |
| 2018-08-24 | 551-286-2XXX | 2000–2999 | Assigned | CABLEVISION LIGHTPATH, INC. - NJ | 4948 | HACKENSACK | NJ |
| 2018-08-24 | 551-286-3XXX | 3000–3999 | Assigned | CABLEVISION LIGHTPATH, INC. - NJ | 4948 | HACKENSACK | NJ |
| 2018-08-23 | 551-284-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | RIDGEWOOD | NJ |
| 2018-08-22 | 551-280-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | JERSEYCITY | NJ |
| 2018-08-22 | 551-280-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | JERSEYCITY | NJ |
| 2018-08-17 | 551-284-0XXX | 0000–0999 | Assigned | ONVOY, LLC - NJ | 637C | RIDGEWOOD | NJ |
| 2018-08-14 | 551-722-4XXX | 4000–4999 | Assigned | ONVOY, LLC - NJ | 637C | HASBROKHTS | NJ |
| 2018-08-10 | 551-276-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | RIDGEWOOD | NJ |
| 2018-07-31 | 551-282-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | WESTWOOD | NJ |
| 2018-07-30 | 551-276-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | RIDGEWOOD | NJ |
| 2018-07-30 | 551-502-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | RIDGEWOOD | NJ |
| 2018-07-30 | 551-502-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | RIDGEWOOD | NJ |
| 2018-07-12 | 551-280-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | JERSEYCITY | NJ |
| 2018-07-12 | 551-280-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | JERSEYCITY | NJ |
| 2018-07-12 | 551-281-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | NJ |
| 2018-07-12 | 551-281-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | NJ |
| 2018-07-12 | 551-281-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HACKENSACK | NJ |
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.