Lookup › OCN 420C
OCN 420C — Armstrong Telecommunications,
Operating Company Number (OCN) 420C identifies Armstrong Telecommunications, in North American telephone routing records.
| OCN | 420C |
|---|---|
| Company | Armstrong Telecommunications, |
| Numbers in directory | 0 |
Area codes with Armstrong Telecommunications, numbers
- 443 (1)
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Last updated: June 19, 2026