AS13037 ZEN-AS
Zen Internet - UK
AS13037 is not on Fraudex's VPN, proxy and datacenter list, so its IPs are treated like ordinary home, mobile or business connections. A single address can still be flagged if it is a Tor exit relay.
Check an IP from AS13037
Look up any address in real time with the free IP checker, or from your own code:
curl "https://fraudex.xyz/api/check?ip=51.148.0.0" \ -H "X-API-Key: fx_your_key"
The answer includes the network (AS13037), the country and a VPN, proxy, Tor and bot verdict, in under a millisecond. Plans start at $40 for 30 days of unlimited lookups.
IPv4 ranges announced by AS13037
| First IP | Last IP | CIDR | Addresses |
|---|---|---|---|
| 51.148.0.0 | 51.148.255.255 | 51.148.0.0/16 | 65,536 |
| 51.155.0.0 | 51.155.255.255 | 51.155.0.0/16 | 65,536 |
| 62.3.64.0 | 62.3.127.255 | 62.3.64.0/18 | 16,384 |
| 77.104.128.0 | 77.104.191.255 | 77.104.128.0/18 | 16,384 |
| 82.68.0.0 | 82.69.255.255 | 82.68.0.0/15 | 131,072 |
| 82.71.0.0 | 82.71.255.255 | 82.71.0.0/16 | 65,536 |
| 88.97.0.0 | 88.97.79.255 | 88.97.0.0/18, 88.97.64.0/20 | 20,480 |
| 88.97.88.0 | 88.97.91.255 | 88.97.88.0/22 | 1,024 |
| 88.97.96.0 | 88.97.111.255 | 88.97.96.0/20 | 4,096 |
| 88.98.0.0 | 88.98.18.255 | 88.98.0.0/20, 88.98.16.0/23, 88.98.18.0/24 | 4,864 |
| 88.98.21.0 | 88.98.95.255 | 88.98.21.0/24, 88.98.22.0/23, 88.98.24.0/21, 88.98.32.0/19 +1 | 19,200 |
| 88.98.128.0 | 88.98.167.255 | 88.98.128.0/19, 88.98.160.0/21 | 10,240 |
| 88.98.170.0 | 88.98.191.255 | 88.98.170.0/23, 88.98.172.0/22, 88.98.176.0/20 | 5,632 |
| 91.235.214.0 | 91.235.214.255 | 91.235.214.0/24 | 256 |
| 146.66.64.0 | 146.66.127.255 | 146.66.64.0/18 | 16,384 |
| 185.6.135.0 | 185.6.135.255 | 185.6.135.0/24 | 256 |
| 185.81.232.0 | 185.81.235.255 | 185.81.232.0/22 | 1,024 |
| 185.169.116.0 | 185.169.119.255 | 185.169.116.0/22 | 1,024 |
| 185.183.100.0 | 185.183.103.255 | 185.183.100.0/22 | 1,024 |
| 188.122.32.0 | 188.122.61.255 | 188.122.32.0/20, 188.122.48.0/21, 188.122.56.0/22, 188.122.60.0/23 | 7,680 |
| 188.122.63.0 | 188.122.63.255 | 188.122.63.0/24 | 256 |
| 193.19.156.0 | 193.19.157.255 | 193.19.156.0/23 | 512 |
| 212.23.0.0 | 212.23.31.255 | 212.23.0.0/19 | 8,192 |
| 217.155.0.0 | 217.155.255.255 | 217.155.0.0/16 | 65,536 |
IPv6 ranges announced by AS13037
| First IP | Last IP | CIDR |
|---|---|---|
| 2a02:8010:: | 2a02:8017:ffff:ffff:ffff:ffff:ffff:ffff | 2a02:8010::/29 |
Questions about AS13037
Is AS13037 a VPN or hosting network?
Fraudex does not list AS13037 (ZEN-AS) as a VPN, proxy or hosting network. Its addresses are treated as regular traffic, apart from any Tor exit relays.
Which country is AS13037 registered in?
AS13037 is registered in United Kingdom. Individual addresses can be used elsewhere, so check the IP itself when location matters.
How many IP addresses does AS13037 have?
It announces 24 IPv4 ranges with 528,128 addresses in total, plus 1 IPv6 range.
How do I block traffic from AS13037?
Blocking a whole network by number goes stale as ranges change hands. It is more reliable to check each visitor's IP when they sign up, log in or pay: the Fraudex API returns the network and a VPN and bot verdict, so you can block, challenge or just log flagged traffic. See why an IP blocking API pays for itself.