Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS1103

Announcement observedARIN

SURF B.V. · SURFNET-NL

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active10/14/2026, 09:07:32Snapshot expired

View network topology RDAP registration

ASN: AS1103
Registration country: Netherlands
Name: SURF B.V.
Abbreviation: SURFNET-NL
Registration date: 9/23/2002, 12:44:58
Status: Announcement observed
RIR: ARIN

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
129.125.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
130.37.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
131.174.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
131.211.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
131.224.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
132.229.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
134.221.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
136.231.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
137.120.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
137.224.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
137.56.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
139.63.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
141.252.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
143.121.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.0.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.1.0.0/17BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.100.0.0/15BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.102.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.103.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.107.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.107.24.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.108.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.116.128.0/18BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.116.192.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.116.224.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.116.64.0/18BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.117.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.118.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.120.0.0/14BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.124.0.0/15BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.126.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.127.0.0/17BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.136.0.0/15BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.137.128.0/18BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.138.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.140.0.0/14BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.144.0.0/12BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.160.0.0/12BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.19.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.2.0.0/15BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.20.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.216.0.0/17BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 16:00:00	9/26/2026, 00:00:00	✓	×	Historical record
145.216.128.0/17BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 16:00:00	9/25/2026, 08:00:00	✓	×	Historical record
145.217.0.0/18BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 16:00:00	9/26/2026, 00:00:00	✓	×	Historical record
145.217.128.0/18BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 16:00:00	9/26/2026, 00:00:00	✓	×	Historical record
145.217.64.0/18BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 16:00:00	9/26/2026, 00:00:00	✓	×	Historical record
145.23.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.24.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.28.0.0/15BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid
145.33.0.0/16BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/14/2026, 08:00:00	10/14/2026, 00:00:00	✓	×	Currently valid

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: SURF B.V.
RIR: ARIN
Registration country: Netherlands
Registration date: 9/23/2002, 12:44:58
Abuse contact: cert@surfcert.nl

Snapshot trend

10/14/2026, 09:07:3299 v44 v670 Upstream · 1076 Uncertain

10/13/2026, 06:39:0999 v44 v670 Upstream · 1071 Uncertain

10/12/2026, 04:48:2299 v44 v670 Upstream · 1071 Uncertain

10/10/2026, 14:19:3699 v44 v671 Upstream · 1073 Uncertain

10/9/2026, 13:37:35104 v49 v671 Upstream · 1072 Uncertain

10/8/2026, 12:46:35104 v49 v671 Upstream · 1064 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing · iana-rdap-asn-bootstrap · rir-rdap-asn