NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2012-07-13 | 918-986 | 0–9 XXXall 10 · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | TULSA | OK |
| 2011-03-18 | 918-936 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | TULSA | OK |
| — | 918-229 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | SPERRY | OK |
| — | 918-347 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | SAPULPA | OK |
| — | 918-388 | 6XXX7XXX8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | TULSA | OK |
| — | 918-419 | 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | SAND SPG | OK |
| — | 918-528 | 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | JENKS | OK |
| — | 918-609 | 0XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | OWASSO | OK |
| — | 918-739 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | PAETEC ITEL, LLC | 829J | CATOOSA | OK |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.