81.0.0.0/20 covers 81.0.0.0 to 81.0.15.255, 4,096 IPv4 addresses. It is announced by AS15704 (Xtra Telecom S.A.). Every sampled address geolocates to Spain, with 88% in San Sebastián, Guipúzcoa. It is registered to an internet service provider. None of the sampled addresses are flagged as VPN, proxy or Tor.
| Prefix | First IP | Last IP | No. of IPs |
|---|---|---|---|
| 81.0.0.0/24 | |||
| 81.0.1.0/24 | |||
| 81.0.2.0/24 | |||
| 81.0.3.0/24 | |||
| 81.0.4.0/24 | |||
| 81.0.5.0/24 | |||
| 81.0.6.0/24 | |||
| 81.0.7.0/24 | |||
| 81.0.8.0/24 | |||
| 81.0.9.0/24 | |||
| 81.0.10.0/24 | |||
| 81.0.11.0/24 | |||
| 81.0.12.0/24 | |||
| 81.0.13.0/24 | |||
| 81.0.14.0/24 | |||
| 81.0.15.0/24 |
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