NumberResearchRecent prefix assignments
1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026
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 |
|---|---|---|---|---|---|---|
| — | 906-842 | not yet reported which blocks → | UPPER PENINSULA TEL. CO. | 0732 | LK GOGEBIC | MI |
| — | 906-847 | 1XXX2XXX4XXX5XXX7XXX · 5 holders which blocks → | MICHIGAN BELL TEL CO | 9323 | MACKINACIS | MI |
| — | 906-852 | not yet reported which blocks → | MIDWAY TEL. CO. | 0711 | TROUTCREEK | MI |
| — | 906-863 | not yet reported which blocks → | MICHIGAN BELL TEL CO | 9323 | MENOMINEE | MI |
| — | 906-864 | none assigned yet which blocks → | MICHIGAN BELL TEL CO | 9323 | MENOMINEE | MI |
| — | 906-875 | 1XXX2XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → | MICHIGAN BELL TEL CO | 9323 | CRYSTALFLS | MI |
| — | 906-876 | not yet reported which blocks → | HIAWATHA TEL. CO. | 0713 | HULBERT | MI |
| — | 906-883 | not yet reported which blocks → | ONTONAGON COUNTY TEL. CO. | 0717 | MASS | MI |
| — | 906-884 | not yet reported which blocks → | ONTONAGON COUNTY TEL. CO. | 0717 | ONTONAGON | MI |
| — | 906-885 | not yet reported which blocks → | ONTONAGON COUNTY TEL. CO. | 0717 | WHITE PINE | MI |
| — | 906-886 | not yet reported which blocks → | ONTONAGON COUNTY TEL. CO. | 0717 | ROCKLAND | MI |
| — | 906-892 | not yet reported which blocks → | CHATHAM TEL. CO. | 0685 | AU TRAIN | MI |
| — | 906-911 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | MI |
| — | 906-919 | not yet reported which blocks → | RANGE TELECOMMUNICATIONS | 6695 | WATTON | MI |
| — | 906-932 | not yet reported which blocks → | MICHIGAN BELL TEL CO | 9323 | IRONWOOD | MI |
| — | 906-942 | not yet reported which blocks → | CHATHAM TEL. CO. | 0685 | SKANDIA | MI |
| — | 906-950 | not yet reported which blocks → | MI | |||
| — | 906-958 | not yet reported which blocks → | MI | |||
| — | 906-959 | not yet reported which blocks → | MI | |||
| — | 906-971 | not yet reported which blocks → | RANGE TELECOMMUNICATIONS | 6695 | GLADSTONE | MI |
| — | 906-972 | not yet reported which blocks → | RANGE TELECOMMUNICATIONS | 6695 | FENCERIVER | MI |
| — | 906-973 | not yet reported which blocks → | RANGE TELECOMMUNICATIONS | 6695 | MARQUETTE | MI |
| — | 906-976 | not yet reported which blocks → | MI | |||
| — | 906-988 | not yet reported which blocks → | ONTONAGON COUNTY TEL. CO. | 0717 | EWEN | MI |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.