AS1103 SURFNET-NL

SURFnet, The Netherlands

Not flagged: treated as regular traffic

AS1103 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.

CountryNetherlands
IPv4 ranges71
IPv4 addresses7,198,463
IPv6 ranges4
Tor exits now0

Check an IP from AS1103

Look up any address in real time with the free IP checker, or from your own code:

curl "https://fraudex.xyz/api/check?ip=129.125.0.0" \
  -H "X-API-Key: fx_your_key"

The answer includes the network (AS1103), 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 AS1103

First IPLast IPCIDRAddresses
129.125.0.0129.125.255.255129.125.0.0/1665,536
130.37.0.0130.37.255.255130.37.0.0/1665,536
131.174.0.0131.174.255.255131.174.0.0/1665,536
131.211.0.0131.211.255.255131.211.0.0/1665,536
131.224.0.0131.224.255.255131.224.0.0/1665,536
132.229.0.0132.229.255.255132.229.0.0/1665,536
134.221.0.0134.221.255.255134.221.0.0/1665,536
136.231.0.0136.231.255.255136.231.0.0/1665,536
137.56.0.0137.56.255.255137.56.0.0/1665,536
137.120.0.0137.120.255.255137.120.0.0/1665,536
137.224.0.0137.224.255.255137.224.0.0/1665,536
139.63.0.0139.63.255.255139.63.0.0/1665,536
141.252.0.0141.252.255.255141.252.0.0/1665,536
143.121.0.0143.121.255.255143.121.0.0/1665,536
145.0.0.0145.1.127.255145.0.0.0/16, 145.1.0.0/1798,304
145.2.0.0145.3.255.255145.2.0.0/15131,072
145.5.0.0145.5.255.255145.5.0.0/1665,536
145.9.0.0145.9.255.255145.9.0.0/1665,536
145.19.0.0145.20.255.255145.19.0.0/16, 145.20.0.0/16131,072
145.23.0.0145.24.255.255145.23.0.0/16, 145.24.0.0/16131,072
145.28.0.0145.29.255.255145.28.0.0/15131,072
145.33.0.0145.33.255.255145.33.0.0/1665,536
145.37.0.0145.39.255.255145.37.0.0/16, 145.38.0.0/15196,608
145.41.0.0145.41.255.255145.41.0.0/1665,536
145.44.0.0145.44.255.255145.44.0.0/1665,536
145.48.0.0145.49.255.255145.48.0.0/15131,072
145.51.0.0145.52.255.255145.51.0.0/16, 145.52.0.0/16131,072
145.74.0.0145.76.255.255145.74.0.0/15, 145.76.0.0/16196,608
145.81.0.0145.81.255.255145.81.0.0/1665,536
145.85.0.0145.85.255.255145.85.0.0/1665,536
145.88.0.0145.93.255.255145.88.0.0/14, 145.92.0.0/15393,216
145.95.0.0145.97.31.255145.95.0.0/16, 145.96.0.0/16, 145.97.0.0/19139,264
145.97.48.0145.97.255.255145.97.48.0/20, 145.97.64.0/18, 145.97.128.0/1753,248
145.98.8.0145.98.15.255145.98.8.0/212,048
145.98.17.0145.98.255.255145.98.17.0/24, 145.98.18.0/23, 145.98.20.0/22, 145.98.24.0/21 +361,184
145.100.0.0145.100.117.255145.100.0.0/18, 145.100.64.0/19, 145.100.96.0/20, 145.100.112.0/22 +130,208
145.100.120.0145.101.255.255145.100.120.0/21, 145.100.128.0/17, 145.101.0.0/16100,352
145.102.2.0145.102.3.255145.102.2.0/23512
145.102.6.0145.103.255.255145.102.6.0/23, 145.102.8.0/21, 145.102.16.0/20, 145.102.32.0/19 +3129,536
145.107.0.0145.107.3.255145.107.0.0/221,024
145.107.8.0145.107.27.255145.107.8.0/21, 145.107.16.0/21, 145.107.24.0/225,120
145.107.28.0145.108.255.255145.107.28.0/22, 145.107.32.0/19, 145.107.64.0/18, 145.107.128.0/17 +1123,904
145.116.64.0145.116.207.255145.116.64.0/18, 145.116.128.0/18, 145.116.192.0/2036,864
145.116.224.0145.118.255.255145.116.224.0/19, 145.117.0.0/16, 145.118.0.0/16139,264
145.120.0.0145.127.127.255145.120.0.0/14, 145.124.0.0/15, 145.126.0.0/16, 145.127.0.0/17491,520
145.136.0.0145.137.191.255145.136.0.0/16, 145.137.0.0/17, 145.137.128.0/18114,688
145.137.192.0145.138.255.255145.137.192.0/18, 145.138.0.0/1681,920
145.140.0.0145.175.255.255145.140.0.0/14, 145.144.0.0/12, 145.160.0.0/122,359,296
156.83.0.0156.83.255.255156.83.0.0/1665,536
192.16.188.0192.16.189.255192.16.188.0/23512
192.31.231.0192.31.231.255192.31.231.0/24256
192.33.36.0192.33.36.255192.33.36.0/24256
192.42.113.0192.42.115.101192.42.113.0/24, 192.42.114.0/24, 192.42.115.0/26, 192.42.115.64/27 +2614
192.42.115.103192.42.115.255192.42.115.103/32, 192.42.115.104/29, 192.42.115.112/28, 192.42.115.128/25153
192.42.120.0192.42.120.255192.42.120.0/24256
192.42.124.0192.42.127.255192.42.124.0/221,024
192.43.212.0192.43.212.255192.43.212.0/24256
192.87.0.0192.87.255.255192.87.0.0/1665,536
192.104.140.0192.104.140.255192.104.140.0/24256
193.176.235.0193.176.235.255193.176.235.0/24256
193.177.176.0193.177.179.255193.177.176.0/221,024
194.13.16.0194.13.31.255194.13.16.0/204,096
194.13.112.0194.13.119.255194.13.112.0/212,048
194.26.8.0194.26.15.255194.26.8.0/212,048
194.53.88.0194.53.89.255194.53.88.0/23512
194.53.92.0194.53.92.255194.53.92.0/24256
194.53.94.0194.53.95.255194.53.94.0/23512
194.104.124.0194.104.125.255194.104.124.0/23512
194.104.240.0194.104.255.255194.104.240.0/204,096
194.171.0.0194.171.255.255194.171.0.0/1665,536
195.169.0.0195.169.255.255195.169.0.0/1665,536

IPv6 ranges announced by AS1103

First IPLast IPCIDR
2001:610::2001:610:8fff:ffff:ffff:ffff:ffff:ffff2001:610::/33, 2001:610:8000::/36
2001:610:9100::2001:617:ffff:ffff:ffff:ffff:ffff:ffff2001:610:9100::/40, 2001:610:9200::/39, 2001:610:9400::/38, 2001:610:9800::/37 +5
2001:67c:1200::2001:67c:1200:ffff:ffff:ffff:ffff:ffff2001:67c:1200::/48
2001:67c:262c::2001:67c:262c:ffff:ffff:ffff:ffff:ffff2001:67c:262c::/48

Questions about AS1103

Is AS1103 a VPN or hosting network?

Fraudex does not list AS1103 (SURFNET-NL) as a VPN, proxy or hosting network. Its addresses are treated as regular traffic, apart from any Tor exit relays.

Which country is AS1103 registered in?

AS1103 is registered in Netherlands. Individual addresses can be used elsewhere, so check the IP itself when location matters.

How many IP addresses does AS1103 have?

It announces 71 IPv4 ranges with 7,198,463 addresses in total, plus 4 IPv6 ranges.

How do I block traffic from AS1103?

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.

Other large networks in Netherlands

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