Country
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ASN LANDING PAGE
AS1103
SURFNET-NL SURF B.V.
Last updated · Jul 20, 2026
Total prefixes
103
IPv4 prefixes
100
IPv6 prefixes
3
ASN summary
How to read the scale of AS1103
SURFNET-NL SURF B.V. currently reports 103 prefixes and 80 upstream, downstream, or peer relationships. These counts describe the current dataset; they do not by themselves prove network quality, reach, or service use.
What can an ASN page answer?
An ASN page shows the public organization label, country or region, BGP prefixes, and available peer and upstream relationships. It adds network context but cannot confirm a website host, physical facility, security status, or service quality.
How should you read the organization and region fields?
SURFNET-NL SURF B.V. is currently associated with an unknown region. These values come from public network sources and are useful lookup clues; an organization label, registration region, and actual service location may differ.
How should you verify the AS1103 result?
The page shows ASN data returned by the current upstream query; interpret it with the update time. Open representative IP pages from the same network and compare prefixes, source labels, and query times. Verify operator or service claims with the relevant registry or network operator.
How to verify this ASN result
AS1103 ASN lookupAS1103 BGPAS1103 peersAS1103 prefixesAS1103 upstreamsSURFNET-NL SURF B.V. ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS3257
AS3257
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AS7195
AS7195
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AS9498
AS9498
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AS4230
AS4230
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AS1031
AS1031
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AS11537
AS11537
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AS20562
AS20562
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AS1101
AS1101
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AS1152
AS1152
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AS1104
AS1104
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AS1102
AS1102
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AS1145
AS1145
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AS215088
AS215088
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AS4800
AS4800
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AS30844
AS30844
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AS1133
AS1133
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AS271253
AS271253
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AS3216
AS3216
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AS7473
AS7473
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AS28283
AS28283
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AS1124
AS1124
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AS1147
AS1147
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AS288
AS288
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AS1128
AS1128
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AS1837
AS1837
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AS1161
AS1161
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AS1888
AS1888
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AS42165
AS42165
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AS206130
AS206130
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AS7049
AS7049
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AS17557
AS17557
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AS203769
AS203769
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AS7552
AS7552
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AS6910
AS6910
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AS35280
AS35280
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AS1828
AS1828
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AS20965
AS20965
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AS18678
AS18678
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AS263903
AS263903
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AS3333
AS3333
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Peers
AS6830
AS6830
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AS3257
AS3257
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AS6939
AS6939
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AS3333
AS3333
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AS20562
AS20562
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AS2914
AS2914
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AS9002
AS9002
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AS20965
AS20965
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AS9498
AS9498
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AS7195
AS7195
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AS24785
AS24785
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AS37468
AS37468
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AS1031
AS1031
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AS57463
AS57463
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AS11537
AS11537
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AS3216
AS3216
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AS15412
AS15412
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AS20485
AS20485
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AS64049
AS64049
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AS8220
AS8220
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AS4230
AS4230
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AS5405
AS5405
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AS33891
AS33891
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AS22356
AS22356
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AS13335
AS13335
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AS137409
AS137409
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AS7473
AS7473
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AS31133
AS31133
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AS32787
AS32787
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AS20764
AS20764
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AS29049
AS29049
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AS18678
AS18678
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AS7713
AS7713
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AS37100
AS37100
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AS37662
AS37662
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AS8359
AS8359
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AS7049
AS7049
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AS23764
AS23764
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AS4800
AS4800
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AS28283
AS28283
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Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 129.125.0.0/16 | AS1103 | — |
| 130.37.0.0/16 | AS1103 | — |
| 131.174.0.0/16 | AS1103 | — |
| 131.211.0.0/16 | AS1103 | — |
| 131.224.0.0/16 | AS1103 | — |
| 132.229.0.0/16 | AS1103 | — |
| 134.221.0.0/16 | AS1103 | — |
| 136.231.0.0/16 | AS1103 | — |
| 137.120.0.0/16 | AS1103 | — |
| 137.224.0.0/16 | AS1103 | — |
| 137.56.0.0/16 | AS1103 | — |
| 139.63.0.0/16 | AS1103 | — |
| 141.252.0.0/16 | AS1103 | — |
| 143.121.0.0/16 | AS1103 | — |
| 145.0.0.0/16 | AS1103 | — |
| 145.1.0.0/17 | AS1103 | — |
| 145.100.0.0/15 | AS1103 | — |
| 145.102.0.0/16 | AS1103 | — |
| 145.103.0.0/16 | AS1103 | — |
| 145.107.0.0/16 | AS1103 | — |
| 145.107.24.0/22 | AS1103 | — |
| 145.108.0.0/16 | AS1103 | — |
| 145.116.128.0/18 | AS1103 | — |
| 145.116.192.0/20 | AS1103 | — |
| 145.116.224.0/19 | AS1103 | — |
| 145.116.64.0/18 | AS1103 | — |
| 145.117.0.0/16 | AS1103 | — |
| 145.118.0.0/16 | AS1103 | — |
| 145.120.0.0/14 | AS1103 | — |
| 145.124.0.0/15 | AS1103 | — |
| 145.126.0.0/16 | AS1103 | — |
| 145.127.0.0/17 | AS1103 | — |
| 145.136.0.0/15 | AS1103 | — |
| 145.137.128.0/18 | AS1103 | — |
| 145.138.0.0/16 | AS1103 | — |
| 145.140.0.0/14 | AS1103 | — |
| 145.144.0.0/12 | AS1103 | — |
| 145.160.0.0/12 | AS1103 | — |
| 145.19.0.0/16 | AS1103 | — |
| 145.2.0.0/15 | AS1103 | — |
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Related lookups and next steps
Frequently asked questions about this ASN page
What does AS1103 represent?
AS1103 is an autonomous system number. The current source associates it with SURFNET-NL SURF B.V. and the region field an unknown region; those values add network context but do not prove a specific service, physical location, or quality level.
What are peers, upstreams, and prefixes useful for on the AS1103 page?
They help explain the scale, interconnection depth, and route structure of AS1103. Richer peering and upstream data often indicate broader network reach, but they should still be interpreted together with prefixes and related IP landing pages.
What should you do after reviewing AS1103?
Open a concrete IP page to check how the address maps into AS1103, then compare the prefix, source labels, and query time. Verify operator or service claims with the relevant registry or network operator.
Related topics
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Cloud Network and ASN Comparison
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