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ADVANCED TELEPHONE SYS INC DBA HTC COMMUNICATIONS
Operating Company Number (OCN): 2522
Is this carrier legit?
Carriers are telecom operating companies that own number blocks (NPA-NXX). A number showing this carrier does not guarantee the caller is that company — scam calls can spoof caller ID.
Ad Unit
Optional ad placement.Number blocks (sample)
| State | NPA | NXX | Rate center | Open |
|---|---|---|---|---|
| PA | 412 | 706 | PTGSBNZN14 | Prefix |
| PA | 412 | 839 | PTGSBNZN13 | Prefix |
| PA | 412 | 850 | PTGSBNZN19 | Prefix |
| PA | 724 | 507 | AVELLA | Prefix |
| PA | 724 | 701 | BURGETTSTN | Prefix |
| PA | 724 | 760 | CANONSBURG | Prefix |
| PA | 724 | 795 | BUFFALO | Prefix |
| PA | 724 | 821 | MCDONALD | Prefix |
| PA | 724 | 928 | OAKDALE | Prefix |
| PA | 724 | 993 | WASHINGTON | Prefix |
Showing up to 2,000 blocks (cap for performance).
SEO keywords covered
carrier lookup • operating company number • ocn lookup • who owns this number • npa nxx • rate center
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