AS1103 SURFNET-NL SURF B.V.

SURFNET-NL SURF B.V. · registered in the Netherlands

IPv4 addresses7,194,079142 prefixes · 0.230% of announced IPv4

Rank in Netherlands#3largest network in NL by IPv4 space, of 1,026 · 15.91% of NL

Rank worldwide#65of 79,396 networks with IPv4

IPv67 x /32 (524,162 x /48)14 prefixes

CountryNetherlands1,098 ASNs registered there

Open AS1103 in ASN lookup Look up an IP in this network (129.125.0.1) All networks in Netherlands

IPv4 prefixes

All 142 prefixes, in address order.

129.125.0.0/16
130.37.0.0/16
131.174.0.0/16
131.211.0.0/16
131.224.0.0/16
132.229.0.0/16
134.221.0.0/16
136.231.0.0/16
137.56.0.0/16
137.120.0.0/16
137.224.0.0/16
139.63.0.0/16
141.252.0.0/16
143.121.0.0/16
145.0.0.0/16
145.1.0.0/17
145.2.0.0/15
145.5.0.0/16
145.9.0.0/16
145.19.0.0/16
145.20.0.0/16
145.23.0.0/16
145.24.0.0/16
145.28.0.0/15
145.33.0.0/16
145.37.0.0/16
145.38.0.0/15
145.41.0.0/16
145.44.0.0/16
145.48.0.0/15
145.51.0.0/16
145.52.0.0/16
145.74.0.0/15
145.76.0.0/16
145.81.0.0/16
145.85.0.0/16
145.88.0.0/14
145.92.0.0/15
145.95.0.0/16
145.96.0.0/16
145.97.0.0/19
145.97.48.0/20
145.97.64.0/18
145.97.128.0/17
145.98.8.0/21
145.98.17.0/24
145.98.18.0/23
145.98.20.0/22
145.98.24.0/21
145.98.32.0/19
145.98.64.0/18
145.98.128.0/17
145.100.0.0/18
145.100.64.0/19
145.100.96.0/20
145.100.112.0/22
145.100.116.0/23
145.100.120.0/21
145.100.128.0/17
145.101.0.0/16
145.102.2.0/23
145.102.6.0/23
145.102.8.0/21
145.102.16.0/20
145.102.32.0/19
145.102.64.0/18
145.102.128.0/17
145.103.0.0/16
145.107.0.0/22
145.107.8.0/21
145.107.16.0/21
145.107.24.0/22
145.107.28.0/22
145.107.32.0/19
145.107.64.0/18
145.107.128.0/17
145.108.0.0/16
145.116.64.0/18
145.116.128.0/18
145.116.192.0/20
145.116.224.0/19
145.117.0.0/16
145.118.0.0/16
145.120.0.0/14
145.124.0.0/15
145.126.0.0/16
145.127.0.0/17
145.136.0.0/16
145.137.0.0/17
145.137.128.0/18
145.137.192.0/18
145.138.0.0/16
145.140.0.0/14
145.144.0.0/12
145.160.0.0/12
156.83.0.0/16
192.16.188.0/23
192.31.231.0/24
192.33.36.0/24
192.42.113.0/24
192.42.114.0/24
192.42.115.0/26
192.42.115.64/27
192.42.115.96/30
192.42.115.100/31
192.42.115.103/32
192.42.115.104/29
192.42.115.112/28
192.42.115.128/25
192.42.120.0/24
192.42.124.0/22
192.43.212.0/24
192.87.0.0/17
192.87.128.0/19
192.87.160.0/22
192.87.164.0/23
192.87.167.0/24
192.87.168.0/21
192.87.176.0/20
192.87.192.0/18
192.104.140.0/24
193.176.235.0/24
193.177.176.0/22
194.13.112.0/21
194.26.8.0/21
194.53.88.0/23
194.53.92.0/24
194.53.94.0/23
194.104.124.0/23
194.104.240.0/20
194.171.0.0/16
195.169.0.0/17
195.169.128.0/21
195.169.136.0/22
195.169.140.0/23
195.169.142.32/27
195.169.142.64/26
195.169.142.128/25
195.169.143.0/24
195.169.144.0/20
195.169.160.0/19
195.169.192.0/18

IPv6 prefixes

All 14 prefixes.

2001:610::/33
2001:610:8000::/36
2001:610:9080::/41
2001:610:9100::/40
2001:610:9200::/39
2001:610:9400::/38
2001:610:9800::/37
2001:610:a000::/35
2001:610:c000::/34
2001:611::/32
2001:612::/31
2001:614::/30
2001:67c:1200::/48
2001:67c:262c::/48

Similar-sized networks in Netherlands

ASNNameIPv4 addresses

AS20940#1 AKAMAI-ASN1 Akamai International B.V.8,198,596

AS1136#2 KPN KPN B.V.7,265,791

AS33915#4 TNF-AS Vodafone Libertel B.V.6,589,184

AS50266#5 Odido Odido Netherlands B.V.1,938,176

AS1101#6 IP-EEND-AS SURF B.V.1,773,056

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources