Carrier group · Competitive Local Exchange Carrier
Northern Telephone and Data Corporation
Total blocks
2
Recent (18 mo)
0
Medium
0
Old
2
Member OCNs
1
States
1
Area codes
1
First assigned block
2001-02-05
2001-02-05
Last assigned block
2004-11-02
2004-11-02
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Block portfolio at a glance
By age
- Recent (0) — last 18 mo
- Medium (0)
- Old (2)
Footprint by state
Stronger blue = more blocks issued in that state. ● marks states with activity in the last 18 months.
- Wisconsin WI · 2
Top area codes
Bars show total blocks; red overlay is recent.
Block assignments by year
Member OCNs
1 OCN roll up under Northern Telephone and Data Corporation.
| OCN | Company name on file | HQ | Type | Total | Recent |
|---|---|---|---|---|---|
| 1519 | Northern Telephone and Data Corporation - WI | Oshkosh, WI | Competitive Local Exchange Carrier | 2 | — |