206208 looking glass

AS1101 SURF (Thunderlab) 🇳🇱 NL

SURF B.V.. Announcing 20 prefixes, seen at the RIS collectors.

IPv4 prefixes
17
1,904,640 (7,440 × /24)
IPv6 prefixes
3
1 × /32
Upstreams
5
transit providers observed
Peers
17
settlement-free adjacencies
Downstreams
5
transit customers observed
Customer cone
5
ASes reachable through it

Registry and operator data

AS number
AS1101
Name
SURF (Thunderlab)
Organisation
Not SURF Net
Country
🇳🇱 NL
RIR
RIPENCC
Allocated
1993-09-01
Network type
Educational/Research
Scope
Not Disclosed
Peering policy
Open
IRR as-set
AS-NOTSURFNET
Website
https://as1101.net/
PeeringDB
net/12746
Exchanges
4
Facilities
2

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

10 valid (50.0%) 1 invalid (5.0%) 9 no ROA (45.0%)

Announced prefixes

20 in total

Prefix RPKI Peers Sample path First seen
44.137.0.0/16 v4 no ROA 43 377211101 2026-09-18
145.99.0.0/16 v4 RPKI valid 44 2023651101 2026-09-18
145.102.4.0/23 v4 RPKI valid 43 2023651101 2026-09-18
145.192.0.0/12 v4 RPKI valid 45 2023651101 2026-09-18
145.208.0.0/13 v4 RPKI valid 45 2023651101 2026-09-18
145.216.0.0/15 v4 RPKI invalid 1 34927174325711031101 2026-09-18
145.220.0.0/16 v4 RPKI valid 44 2023651101 2026-09-18
185.17.73.0/24 v4 RPKI valid 44 2040921101 2026-09-18
185.100.59.0/24 v4 RPKI valid 44 2023651101 2026-09-18
192.12.54.0/24 v4 no ROA 44 2023651101 2026-09-18
192.16.200.0/24 v4 no ROA 44 2023651101 2026-09-18
192.42.117.0/24 v4 no ROA 44 2023651101 2026-09-18
192.42.118.0/23 v4 no ROA 45 20409211031101 2026-09-18
192.42.118.0/24 v4 no ROA 19 377211101 2026-09-18
192.42.119.0/24 v4 no ROA 19 377211101 2026-09-18
192.42.128.0/22 v4 no ROA 44 2023651101 2026-09-18
192.150.94.0/24 v4 no ROA 44 2023651101 2026-09-18
2001:67c:6ec::/48 v6 RPKI valid 35 2040921101 2026-09-18
2001:67c:12d8::/48 v6 RPKI valid 35 2040921101 2026-09-18
2a04:601::/32 v6 RPKI valid 36 20409211031101 2026-09-18