AS21859 ZEN-ECN
Flagged: hosting, VPN or proxy network
Fraudex lists AS21859 as infrastructure that real customers rarely browse from: servers, VPN exits, proxies or bot networks. Every IP announced by this network comes back from /api/check with "is_bot": true.
Check an IP from AS21859
Look up any address in real time with the free IP checker, or from your own code:
curl "https://fraudex.xyz/api/check?ip=2.27.161.0" \ -H "X-API-Key: fx_your_key"
The answer includes the network (AS21859), 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 AS21859
Showing the first 100 of 586 ranges.
| First IP | Last IP | CIDR | Addresses |
|---|---|---|---|
| 2.27.161.0 | 2.27.161.255 | 2.27.161.0/24 | 256 |
| 5.252.82.0 | 5.252.82.255 | 5.252.82.0/24 | 256 |
| 8.23.192.0 | 8.23.193.255 | 8.23.192.0/23 | 512 |
| 14.102.227.0 | 14.102.227.255 | 14.102.227.0/24 | 256 |
| 23.27.112.0 | 23.27.112.255 | 23.27.112.0/24 | 256 |
| 23.90.128.0 | 23.90.191.255 | 23.90.128.0/18 | 16,384 |
| 23.91.102.0 | 23.91.103.255 | 23.91.102.0/23 | 512 |
| 23.91.108.0 | 23.91.108.255 | 23.91.108.0/24 | 256 |
| 23.128.196.0 | 23.128.196.255 | 23.128.196.0/24 | 256 |
| 23.139.252.0 | 23.139.252.255 | 23.139.252.0/24 | 256 |
| 23.236.65.0 | 23.236.65.255 | 23.236.65.0/24 | 256 |
| 23.236.70.0 | 23.236.70.255 | 23.236.70.0/24 | 256 |
| 23.236.96.0 | 23.236.104.255 | 23.236.96.0/21, 23.236.104.0/24 | 2,304 |
| 23.236.105.0 | 23.236.110.255 | 23.236.105.0/24, 23.236.106.0/23, 23.236.108.0/23, 23.236.110.0/24 | 1,536 |
| 23.236.112.0 | 23.236.114.255 | 23.236.112.0/23, 23.236.114.0/24 | 768 |
| 23.236.115.0 | 23.236.116.255 | 23.236.115.0/24, 23.236.116.0/24 | 512 |
| 23.236.117.0 | 23.236.125.255 | 23.236.117.0/24, 23.236.118.0/23, 23.236.120.0/22, 23.236.124.0/23 | 2,304 |
| 23.236.127.0 | 23.236.127.255 | 23.236.127.0/24 | 256 |
| 23.248.160.0 | 23.248.161.255 | 23.248.160.0/23 | 512 |
| 23.248.164.0 | 23.248.173.255 | 23.248.164.0/22, 23.248.168.0/22, 23.248.172.0/23 | 2,560 |
| 23.248.176.0 | 23.248.183.255 | 23.248.176.0/21 | 2,048 |
| 23.248.186.0 | 23.248.191.255 | 23.248.186.0/23, 23.248.188.0/22 | 1,536 |
| 23.251.96.0 | 23.251.100.94 | 23.251.96.0/22, 23.251.100.0/26, 23.251.100.64/28, 23.251.100.80/29 +3 | 1,119 |
| 23.251.100.95 | 23.251.103.255 | 23.251.100.95/32, 23.251.100.96/27, 23.251.100.128/25, 23.251.101.0/24 +1 | 929 |
| 23.251.104.0 | 23.251.124.255 | 23.251.104.0/21, 23.251.112.0/21, 23.251.120.0/22, 23.251.124.0/24 | 5,376 |
| 23.251.125.0 | 23.251.127.255 | 23.251.125.0/24, 23.251.126.0/23 | 768 |
| 31.57.35.0 | 31.57.35.255 | 31.57.35.0/24 | 256 |
| 31.57.100.0 | 31.57.100.255 | 31.57.100.0/24 | 256 |
| 31.57.228.0 | 31.57.228.255 | 31.57.228.0/24 | 256 |
| 31.216.56.0 | 31.216.56.255 | 31.216.56.0/24 | 256 |
| 36.255.193.0 | 36.255.194.255 | 36.255.193.0/24, 36.255.194.0/24 | 512 |
| 37.202.222.0 | 37.202.222.255 | 37.202.222.0/24 | 256 |
| 38.28.244.0 | 38.28.247.255 | 38.28.244.0/22 | 1,024 |
| 38.33.144.0 | 38.33.159.255 | 38.33.144.0/20 | 4,096 |
| 38.38.252.0 | 38.38.255.255 | 38.38.252.0/22 | 1,024 |
| 38.46.78.0 | 38.46.79.255 | 38.46.78.0/23 | 512 |
| 38.86.195.0 | 38.86.195.255 | 38.86.195.0/24 | 256 |
| 38.109.249.0 | 38.109.249.255 | 38.109.249.0/24 | 256 |
| 38.128.8.0 | 38.128.8.255 | 38.128.8.0/24 | 256 |
| 38.128.10.0 | 38.128.10.255 | 38.128.10.0/24 | 256 |
| 38.130.118.0 | 38.130.118.255 | 38.130.118.0/24 | 256 |
| 38.131.128.0 | 38.131.131.255 | 38.131.128.0/22 | 1,024 |
| 38.131.237.0 | 38.131.237.255 | 38.131.237.0/24 | 256 |
| 38.135.99.0 | 38.135.99.255 | 38.135.99.0/24 | 256 |
| 38.143.41.0 | 38.143.41.255 | 38.143.41.0/24 | 256 |
| 38.183.160.0 | 38.183.175.255 | 38.183.160.0/20 | 4,096 |
| 38.211.80.0 | 38.211.95.255 | 38.211.80.0/20 | 4,096 |
| 40.27.57.0 | 40.27.57.255 | 40.27.57.0/24 | 256 |
| 40.183.227.0 | 40.183.227.255 | 40.183.227.0/24 | 256 |
| 43.174.120.0 | 43.174.121.255 | 43.174.120.0/23 | 512 |
| 43.229.152.0 | 43.229.152.255 | 43.229.152.0/24 | 256 |
| 43.242.137.0 | 43.242.137.255 | 43.242.137.0/24 | 256 |
| 43.243.195.0 | 43.243.195.255 | 43.243.195.0/24 | 256 |
| 45.10.69.0 | 45.10.71.255 | 45.10.69.0/24, 45.10.70.0/23 | 768 |
| 45.39.70.0 | 45.39.70.255 | 45.39.70.0/24 | 256 |
| 45.40.48.0 | 45.40.55.255 | 45.40.48.0/21 | 2,048 |
| 45.40.58.0 | 45.40.63.255 | 45.40.58.0/23, 45.40.60.0/22 | 1,536 |
| 45.43.32.0 | 45.43.35.255 | 45.43.32.0/22 | 1,024 |
| 45.43.38.0 | 45.43.51.255 | 45.43.38.0/23, 45.43.40.0/21, 45.43.48.0/22 | 3,584 |
| 45.81.129.0 | 45.81.131.255 | 45.81.129.0/24, 45.81.130.0/23 | 768 |
| 45.119.5.0 | 45.119.5.255 | 45.119.5.0/24 | 256 |
| 45.124.253.0 | 45.124.255.255 | 45.124.253.0/24, 45.124.254.0/23 | 768 |
| 45.128.144.0 | 45.128.145.255 | 45.128.144.0/23 | 512 |
| 45.131.176.0 | 45.131.177.255 | 45.131.176.0/23 | 512 |
| 45.132.236.0 | 45.132.237.255 | 45.132.236.0/23 | 512 |
| 45.133.176.0 | 45.133.176.255 | 45.133.176.0/24 | 256 |
| 45.133.236.0 | 45.133.237.255 | 45.133.236.0/23 | 512 |
| 45.134.80.0 | 45.134.81.255 | 45.134.80.0/23 | 512 |
| 45.137.8.0 | 45.137.9.255 | 45.137.8.0/23 | 512 |
| 45.151.141.0 | 45.151.141.255 | 45.151.141.0/24 | 256 |
| 45.155.158.0 | 45.155.158.255 | 45.155.158.0/24 | 256 |
| 45.156.131.0 | 45.156.131.255 | 45.156.131.0/24 | 256 |
| 45.197.9.0 | 45.197.9.255 | 45.197.9.0/24 | 256 |
| 45.198.106.0 | 45.198.106.255 | 45.198.106.0/24 | 256 |
| 45.199.186.0 | 45.199.186.255 | 45.199.186.0/24 | 256 |
| 45.207.168.0 | 45.207.168.255 | 45.207.168.0/24 | 256 |
| 45.251.136.0 | 45.251.139.255 | 45.251.136.0/22 | 1,024 |
| 45.252.8.0 | 45.252.8.255 | 45.252.8.0/24 | 256 |
| 46.102.232.0 | 46.102.232.255 | 46.102.232.0/24 | 256 |
| 46.203.46.0 | 46.203.46.255 | 46.203.46.0/24 | 256 |
| 46.203.215.0 | 46.203.215.255 | 46.203.215.0/24 | 256 |
| 46.203.217.0 | 46.203.217.255 | 46.203.217.0/24 | 256 |
| 46.203.219.0 | 46.203.219.255 | 46.203.219.0/24 | 256 |
| 46.203.221.0 | 46.203.221.255 | 46.203.221.0/24 | 256 |
| 49.128.198.0 | 49.128.198.255 | 49.128.198.0/24 | 256 |
| 50.114.13.0 | 50.114.13.255 | 50.114.13.0/24 | 256 |
| 50.114.52.0 | 50.114.52.255 | 50.114.52.0/24 | 256 |
| 50.114.54.0 | 50.114.54.255 | 50.114.54.0/24 | 256 |
| 50.114.60.0 | 50.114.60.255 | 50.114.60.0/24 | 256 |
| 50.114.73.0 | 50.114.73.255 | 50.114.73.0/24 | 256 |
| 50.114.188.0 | 50.114.188.255 | 50.114.188.0/24 | 256 |
| 50.114.196.0 | 50.114.197.255 | 50.114.196.0/23 | 512 |
| 50.114.199.0 | 50.114.201.255 | 50.114.199.0/24, 50.114.200.0/23 | 768 |
| 50.114.248.0 | 50.114.251.255 | 50.114.248.0/22 | 1,024 |
| 50.118.216.0 | 50.118.216.255 | 50.118.216.0/24 | 256 |
| 58.69.38.0 | 58.69.38.255 | 58.69.38.0/24 | 256 |
| 61.91.194.0 | 61.91.194.255 | 61.91.194.0/24 | 256 |
| 64.40.150.0 | 64.40.150.255 | 64.40.150.0/24 | 256 |
| 64.72.226.0 | 64.72.226.255 | 64.72.226.0/24 | 256 |
| 64.81.188.0 | 64.81.188.255 | 64.81.188.0/24 | 256 |
IPv6 ranges announced by AS21859
Showing the first 30 of 57 ranges.
| First IP | Last IP | CIDR |
|---|---|---|
| 2404:3700:: | 2404:3700:0:ffff:ffff:ffff:ffff:ffff | 2404:3700::/48 |
| 240d:c010:14b:: | 240d:c010:14c:ffff:ffff:ffff:ffff:ffff | 240d:c010:14b::/48, 240d:c010:14c::/48 |
| 2602:fed2:731a:: | 2602:fed2:731a:ffff:ffff:ffff:ffff:ffff | 2602:fed2:731a::/48 |
| 2602:ffe4:: | 2602:ffe4:3:ffff:ffff:ffff:ffff:ffff | 2602:ffe4::/46 |
| 2602:ffe4:4:: | 2602:ffe4:401:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:4::/46, 2602:ffe4:8::/45, 2602:ffe4:10::/44, 2602:ffe4:20::/43 +5 |
| 2602:ffe4:402:: | 2602:ffe4:407:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:402::/47, 2602:ffe4:404::/46 |
| 2602:ffe4:409:: | 2602:ffe4:bff:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:409::/48, 2602:ffe4:40a::/47, 2602:ffe4:40c::/46, 2602:ffe4:410::/44 +6 |
| 2602:ffe4:c01:: | 2602:ffe4:c03:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c01::/48, 2602:ffe4:c02::/47 |
| 2602:ffe4:c05:: | 2602:ffe4:c07:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c05::/48, 2602:ffe4:c06::/47 |
| 2602:ffe4:c09:: | 2602:ffe4:c0b:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c09::/48, 2602:ffe4:c0a::/47 |
| 2602:ffe4:c0d:: | 2602:ffe4:c0d:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c0d::/48 |
| 2602:ffe4:c11:: | 2602:ffe4:c11:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c11::/48 |
| 2602:ffe4:c13:: | 2602:ffe4:c16:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c13::/48, 2602:ffe4:c14::/47, 2602:ffe4:c16::/48 |
| 2602:ffe4:c18:: | 2602:ffe4:c1a:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c18::/47, 2602:ffe4:c1a::/48 |
| 2602:ffe4:c1c:: | 2602:ffe4:c1c:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c1c::/48 |
| 2602:ffe4:c1f:: | 2602:ffe4:c22:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c1f::/48, 2602:ffe4:c20::/47, 2602:ffe4:c22::/48 |
| 2602:ffe4:c26:: | 2602:ffe4:c27:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c26::/47 |
| 2602:ffe4:c34:: | 2602:ffe4:c34:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c34::/48 |
| 2602:ffe4:c37:: | 2602:ffe4:c37:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c37::/48 |
| 2602:ffe4:c3b:: | 2602:ffe4:c3c:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c3b::/48, 2602:ffe4:c3c::/48 |
| 2602:ffe4:c3e:: | 2602:ffe4:c3e:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c3e::/48 |
| 2602:ffe4:c40:: | 2602:ffe4:c42:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c40::/47, 2602:ffe4:c42::/48 |
| 2602:ffe4:c44:: | 2602:ffe4:c45:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c44::/47 |
| 2602:ffe4:c48:: | 2602:ffe4:c54:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c48::/45, 2602:ffe4:c50::/46, 2602:ffe4:c54::/48 |
| 2602:ffe4:c56:: | 2602:ffe4:c58:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c56::/47, 2602:ffe4:c58::/48 |
| 2602:ffe4:c5b:: | 2602:ffe4:c5b:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c5b::/48 |
| 2602:ffe4:c5d:: | 2602:ffe4:c5e:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c5d::/48, 2602:ffe4:c5e::/48 |
| 2602:ffe4:c64:: | 2602:ffe4:c65:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c64::/47 |
| 2602:ffe4:c6c:: | 2602:ffe4:c6e:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c6c::/47, 2602:ffe4:c6e::/48 |
| 2602:ffe4:c70:: | 2602:ffe4:c70:ffff:ffff:ffff:ffff:ffff | 2602:ffe4:c70::/48 |
Questions about AS21859
Is AS21859 a VPN or hosting network?
Yes. Fraudex lists AS21859 (ZEN-ECN) among the hosting, VPN, proxy and bot networks it flags, so visitors from it are usually servers or people hiding their real location rather than ordinary customers.
Which country is AS21859 registered in?
AS21859 is registered in United States. Individual addresses can be used elsewhere, so check the IP itself when location matters.
How many IP addresses does AS21859 have?
It announces 586 IPv4 ranges with 657,664 addresses in total, plus 57 IPv6 ranges.
How do I block traffic from AS21859?
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.