Autonomous System
AS39729 REGISTER S.P.A.
HostingActiveItalyRIPE
AS39729 (REGISTER-AS) is a hosting network operated by REGISTER S.P.A. in Italy, registered with RIPE. It has 21 IPv4 prefixes with 13,312 addresses and 1 IPv6 prefix, which makes it the 8,740th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses13,312in 21 prefixes
IPv6 prefixes1≈ 5.0 × 10²⁷ addresses
Size rank#8,740of 82,200 active ASNs
Details
OrganizationREGISTER S.P.A. · hosting provider profile
AS nameREGISTER-AS
Websiteregister.it
Country Italy (IT)
Network typeHosting
RegistryRIPE
Abuse contactabuse@register.it
Registered2006-04-18
Last updated2025-09-18
IPv4 prefixes
21 prefixes · 13,312 addresses| Network | Addresses | First – last address |
|---|---|---|
| 81.88.48.0/20 | 4,096 | 81.88.48.0 – 81.88.63.255 |
| 185.2.4.0/22 | 1,024 | 185.2.4.0 – 185.2.7.255 |
| 195.110.124.0/22 | 1,024 | 195.110.124.0 – 195.110.127.255 |
| 213.158.80.0/22 | 1,024 | 213.158.80.0 – 213.158.83.255 |
| 185.110.66.0/23 | 512 | 185.110.66.0 – 185.110.67.255 |
| 195.110.100.0/23 | 512 | 195.110.100.0 – 195.110.101.255 |
| 195.110.102.0/23 | 512 | 195.110.102.0 – 195.110.103.255 |
| 195.110.104.0/23 | 512 | 195.110.104.0 – 195.110.105.255 |
| 195.110.118.0/23 | 512 | 195.110.118.0 – 195.110.119.255 |
| 195.110.120.0/23 | 512 | 195.110.120.0 – 195.110.121.255 |
| 195.110.122.0/23 | 512 | 195.110.122.0 – 195.110.123.255 |
| 81.88.52.0/24 | 256 | 81.88.52.0 – 81.88.52.255 |
| 81.88.53.0/24 | 256 | 81.88.53.0 – 81.88.53.255 |
| 81.88.58.0/24 | 256 | 81.88.58.0 – 81.88.58.255 |
| 81.88.60.0/24 | 256 | 81.88.60.0 – 81.88.60.255 |
| 81.88.61.0/24 | 256 | 81.88.61.0 – 81.88.61.255 |
| 81.88.63.0/24 | 256 | 81.88.63.0 – 81.88.63.255 |
| 185.2.6.0/24 | 256 | 185.2.6.0 – 185.2.6.255 |
| 185.110.66.0/24 | 256 | 185.110.66.0 – 185.110.66.255 |
| 195.110.107.0/24 | 256 | 195.110.107.0 – 195.110.107.255 |
| 195.110.112.0/24 | 256 | 195.110.112.0 – 195.110.112.255 |
81.88.48.0/20 185.2.4.0/22 195.110.124.0/22 213.158.80.0/22 185.110.66.0/23 195.110.100.0/23 195.110.102.0/23 195.110.104.0/23 195.110.118.0/23 195.110.120.0/23 195.110.122.0/23 81.88.52.0/24 81.88.53.0/24 81.88.58.0/24 81.88.60.0/24 81.88.61.0/24 81.88.63.0/24 185.2.6.0/24 185.110.66.0/24 195.110.107.0/24 195.110.112.0/24
IPv6 prefixes
1 prefix- 2a01:8100:2000::/36
2a01:8100:2000::/36
Query AS39729 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS39729&key=YOUR_API_KEY"Any address in its prefixes resolves to AS39729, with or without a key:
curl "https://api.ipapi.is/?q=81.88.48.1"