NumberResearchRecent thousands-block assignments
2 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 518
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 |
|---|---|---|---|---|---|---|---|
| 2014-07-07 | 518-333-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | FTCOVINGTN | NY |
| 2014-07-07 | 518-345-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | GRANVILLE | NY |
| 2014-07-07 | 518-351-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | SCHROON LK | NY |
| 2014-07-07 | 518-400-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | ROUND LAKE | NY |
| 2014-07-07 | 518-406-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | JONESVILLE | NY |
| 2014-07-07 | 518-412-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | ELIZABTHTN | NY |
| 2014-07-07 | 518-418-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | LAKEPLACID | NY |
| 2014-07-07 | 518-425-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | BRAINADSVL | NY |
| 2014-07-07 | 518-460-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | GALWAY | NY |
| 2014-07-07 | 518-468-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | GREENFLCTR | NY |
| 2014-07-07 | 518-497-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | CHATEAUGAY | NY |
| 2014-07-07 | 518-500-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | CENTRALBDG | NY |
| 2014-07-07 | 518-502-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | GLENSFALLS | NY |
| 2014-07-07 | 518-504-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | WARRENSBG | NY |
| 2014-07-07 | 518-520-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | PALENVILLE | NY |
| 2014-07-07 | 518-535-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | DELANSON | NY |
| 2014-07-07 | 518-546-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | PORT HENRY | NY |
| 2014-07-07 | 518-551-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | PERU | NY |
| 2014-07-07 | 518-552-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | SALEM | NY |
| 2014-07-07 | 518-553-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | VALLEY FLS | NY |
| 2014-07-07 | 518-554-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | TUPPERLAKE | NY |
| 2014-07-07 | 518-558-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | TICONDROGA | NY |
| 2014-07-07 | 518-600-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | SARANAC | NY |
| 2014-07-07 | 518-601-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | MINEVILLE | NY |
| 2014-07-07 | 518-622-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | CAIRO | NY |
| 2014-07-07 | 518-628-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | HUNTER | NY |
| 2014-07-07 | 518-635-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | SOBETHLEHM | NY |
| 2014-07-07 | 518-655-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | VOORHEESVL | NY |
| 2014-07-07 | 518-659-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | HOOSICKFLS | NY |
| 2014-07-07 | 518-660-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | HUDSON | NY |
| 2014-07-07 | 518-662-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | GREENVILLE | NY |
| 2014-07-07 | 518-665-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | MECHANICVL | NY |
| 2014-07-07 | 518-672-0XXX | 0000–0999 | Assigned | HD CARRIER LLC | 321J | PHILMONT | NY |
| 2014-07-07 | 518-675-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ALTAMONT | NY |
| 2014-07-07 | 518-675-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | ALTAMONT | NY |
| 2014-07-07 | 518-712-0XXX | 0000–0999 | Assigned | HD CARRIER LLC | 321J | AVERILL PK | NY |
| 2014-07-07 | 518-719-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | CATSKILL | NY |
| 2014-07-07 | 518-721-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | CLAVERACK | NY |
| 2014-07-07 | 518-722-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | OAK HILL | NY |
| 2014-07-07 | 518-740-0XXX | 0000–0999 | Assigned | HD CARRIER LLC | 321J | TANNERSVL | NY |
| 2014-07-07 | 518-750-9XXX | 9000–9999 | Assigned | HD CARRIER LLC | 321J | WINDHAM | NY |
| 2014-07-07 | 518-754-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | CASTLETON | NY |
| 2014-07-07 | 518-757-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | BERNE | NY |
| 2014-07-07 | 518-800-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | ARGYLE | NY |
| 2014-07-07 | 518-823-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | COBLESKILL | NY |
| 2014-07-07 | 518-841-1XXX | 1000–1999 | Assigned | HD CARRIER LLC | 321J | AMSTERDAM | NY |
| 2014-07-07 | 518-855-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | GREENWICH | NY |
| 2014-07-07 | 518-871-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | SARATOGSPG | NY |
| 2014-07-07 | 518-889-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | BALLSTNSPA | NY |
| 2014-07-07 | 518-897-0XXX | 0000–0999 | Assigned | HD CARRIER LLC | 321J | SARANAC LK | NY |
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.