ASN Lookup

An ASN lookup helps you identify the Autonomous System Number (ASN) behind an IP address, including the ISP, network owner, and routing details. Use it to better understand IP ownership and network behavior.

Enter Autonomous System Number (ASN)

Result

Overview - AS1103

 Netherlands

1103

Surf B.V.

surf.net

(ISP) Fixed Line ISP

7,191,008

633.7 Octillion

IP Coverage

Netblock Number of IPs   
129.125.0.0/16 65,536
130.37.0.0/16 65,536
131.174.0.0/16 65,536
131.211.0.0/16 65,536
131.224.0.0/16 65,536
132.229.0.0/16 65,536
134.221.0.0/16 65,536
136.231.0.0/16 65,536
137.56.0.0/16 65,536
137.120.0.0/16 65,536
137.224.0.0/16 65,536
139.63.0.0/16 65,536
141.252.0.0/16 65,536
143.121.0.0/16 65,536
145.0.0.0/16 65,536
145.1.0.0/17 32,768
145.2.0.0/15 131,072
145.5.0.0/16 65,536
145.9.0.0/16 65,536
145.19.0.0/16 65,536
145.20.0.0/16 65,536
145.23.0.0/16 65,536
145.24.0.0/16 65,536
145.28.0.0/15 131,072
145.33.0.0/16 65,536
145.37.0.0/16 65,536
145.38.0.0/15 131,072
145.41.0.0/16 65,536
145.44.0.0/16 65,536
145.48.0.0/15 131,072
145.51.0.0/16 65,536
145.52.0.0/16 65,536
145.74.0.0/15 131,072
145.76.0.0/16 65,536
145.81.0.0/16 65,536
145.85.0.0/16 65,536
145.88.0.0/15 131,072
145.90.0.0/16 65,536
145.91.0.0/16 65,536
145.92.0.0/15 131,072
145.95.0.0/16 65,536
145.96.0.0/16 65,536
145.97.0.0/20 4,096
145.97.16.0/22 1,024
145.97.20.0/22 1,024
145.97.24.0/21 2,048
145.97.48.0/20 4,096
145.97.64.0/18 16,384
145.97.128.0/18 16,384
145.97.192.0/18 16,384
145.98.8.0/21 2,048
145.98.17.0/24 256
145.98.18.0/23 512
145.98.20.0/22 1,024
145.98.24.0/21 2,048
145.98.32.0/19 8,192
145.98.64.0/18 16,384
145.98.128.0/17 32,768
145.100.0.0/18 16,384
145.100.64.0/19 8,192
145.100.96.0/20 4,096
145.100.112.0/22 1,024
145.100.116.0/23 512
145.100.120.0/21 2,048
145.100.128.0/17 32,768
145.101.0.0/16 65,536
145.102.2.0/23 512
145.102.6.0/23 512
145.102.8.0/21 2,048
145.102.16.0/20 4,096
145.102.32.0/19 8,192
145.102.64.0/18 16,384
145.102.128.0/22 1,024
145.102.136.0/21 2,048
145.102.144.0/20 4,096
145.102.160.0/19 8,192
145.102.192.0/18 16,384
145.103.0.0/16 65,536
145.107.0.0/22 1,024
145.107.8.0/21 2,048
145.107.16.0/21 2,048
145.107.24.0/22 1,024
145.107.28.0/22 1,024
145.107.32.0/19 8,192
145.107.64.0/18 16,384
145.107.128.0/17 32,768
145.108.0.0/16 65,536
145.116.64.0/18 16,384
145.116.128.0/18 16,384
145.116.192.0/20 4,096
145.116.224.0/19 8,192
145.117.0.0/16 65,536
145.118.0.0/16 65,536
145.120.0.0/14 262,144
145.124.0.0/15 131,072
145.126.0.0/16 65,536
145.127.0.0/17 32,768
145.136.0.0/16 65,536
145.137.0.0/17 32,768
145.137.128.0/18 16,384
145.137.192.0/18 16,384
145.138.0.0/16 65,536
145.140.0.0/14 262,144
145.144.0.0/12 1,048,576
145.160.0.0/12 1,048,576
156.83.0.0/16 65,536
192.16.188.0/23 512
192.31.231.0/24 256
192.33.36.0/24 256
192.42.113.0/24 256
192.42.114.0/23 512
192.42.120.0/24 256
192.42.124.0/22 1,024
192.43.212.0/24 256
192.87.0.0/17 32,768
192.87.128.0/19 8,192
192.87.160.0/22 1,024
192.87.164.0/23 512
192.87.167.0/24 256
192.87.168.0/21 2,048
192.87.176.0/20 4,096
192.87.192.0/18 16,384
192.104.140.0/24 256
193.176.235.0/24 256
193.177.176.0/22 1,024
194.13.112.0/21 2,048
194.26.8.0/22 1,024
194.26.12.0/22 1,024
194.53.88.0/24 256
194.53.89.0/24 256
194.53.92.0/24 256
194.53.94.0/24 256
194.53.95.0/24 256
194.104.124.0/23 512
194.104.240.0/20 4,096
194.171.0.0/18 16,384
194.171.64.0/19 8,192
194.171.104.0/21 2,048
194.171.112.0/20 4,096
194.171.128.0/17 32,768
195.169.0.0/17 32,768
195.169.128.0/21 2,048
195.169.136.0/22 1,024
195.169.140.0/23 512
195.169.142.32/27 32
195.169.142.64/26 64
195.169.142.128/25 128
195.169.143.0/24 256
195.169.144.0/20 4,096
195.169.160.0/19 8,192
195.169.192.0/18 16,384

Show more IP address ranges »

Netblock Number of IPs   
2001:610::/40 309,485,009,821,345,068,724,781,056
2001:610:100::/43 38,685,626,227,668,133,590,597,632
2001:610:121::/48 1,208,925,819,614,629,174,706,176
2001:610:122::/47 2,417,851,639,229,258,349,412,352
2001:610:124::/46 4,835,703,278,458,516,698,824,704
2001:610:128::/45 9,671,406,556,917,033,397,649,408
2001:610:130::/44 19,342,813,113,834,066,795,298,816
2001:610:140::/42 77,371,252,455,336,267,181,195,264
2001:610:180::/41 154,742,504,910,672,534,362,390,528
2001:610:200::/39 618,970,019,642,690,137,449,562,112
2001:610:400::/38 1,237,940,039,285,380,274,899,124,224
2001:610:800::/37 2,475,880,078,570,760,549,798,248,448
2001:610:1000::/36 4,951,760,157,141,521,099,596,496,896
2001:610:2000::/35 9,903,520,314,283,042,199,192,993,792
2001:610:4000::/34 19,807,040,628,566,084,398,385,987,584
2001:610:8000::/36 4,951,760,157,141,521,099,596,496,896
2001:610:9080::/41 154,742,504,910,672,534,362,390,528
2001:610:9100::/40 309,485,009,821,345,068,724,781,056
2001:610:9200::/39 618,970,019,642,690,137,449,562,112
2001:610:9400::/38 1,237,940,039,285,380,274,899,124,224
2001:610:9800::/37 2,475,880,078,570,760,549,798,248,448
2001:610:a000::/35 9,903,520,314,283,042,199,192,993,792
2001:610:c000::/34 19,807,040,628,566,084,398,385,987,584
2001:611::/32 79,228,162,514,264,337,593,543,950,336
2001:612::/31 158,456,325,028,528,675,187,087,900,672
2001:614::/30 316,912,650,057,057,350,374,175,801,344
2001:67c:1200::/48 1,208,925,819,614,629,174,706,176
2001:67c:262c::/48 1,208,925,819,614,629,174,706,176

Show more IP address ranges »

Geographic Distribution (IPv4)

Netherlands
 100%

Usage & Classification (IPv4)

(ISP) Fixed Line ISP

53.12%

(EDU) University/College/School

40.21%

(ORG) Organization

3.13%

(GOV) Government

1.14%

(DCH) Data Center/Web Hosting/Transit

0.8%

Fixed Line ISP (ISP)

Internet Service Providers in this category offer wired broadband connections to homes, offices, and commercial buildings. They are responsible for the fundamental routing of internet traffic and the management of regional network infrastructure.

University/College/School (EDU)

Educational IPs serve universities, colleges, and K-12 schools, providing the backbone for campus-wide connectivity. These networks support a wide array of activities, including academic research, student administration, and classroom instruction.

Organization (ORG)

Reserved for non-commercial entities, these networks support NGOs, charities, and professional associations. Rather than pursuing profit, these IPs are dedicated to advocacy, public service, and administrative functions.

Government (GOV)

Government IPs are assigned to official agencies and entities at local, regional, and national levels. These networks are critical for managing public services, regulatory functions, and general administrative tasks.

Data Center/Web Hosting/Transit (DCH)

This category encompasses data centers, cloud hosting providers, and the transit networks that form the internet's backbone. These IPs are built for high-capacity and maximum uptime, supporting the infrastructure that hosts websites and cloud-based software.

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