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Organisatie

SURF B.V.

Enterprise The Netherlands
IPv4-adressen
9,540,864
CIDR-bereiken
156
Categorie
enterprise
BGP prefixes announced
141
live routing →

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

69/100
Moderate
How this score is built
  • Baseline (neutral) 65
  • Enterprise allocation +4
  • Trust score 69 / 100

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

About SURFnet

SURF is an organization that develops, implements and maintains the national research and education network (NREN) of the Netherlands. It operates the national research network formally called SURFnet.

Founded
1989
Headquarters
Utrecht
Parent
SURF (Samenwerkende Universitaire Rekenfaciliteiten)

Operates 3 networks present at 5 internet exchanges with a open peering policy.

Official website ↗ Summary from Wikipedia, CC BY-SA 4.0 · Data from Wikidata

SURF B.V. — wereldwijde IP-voetafdruk

Steden waar SURF B.V. heeft meetbare IPv4-toewijzing. Klik op een punt om de pagina van die stad te openen. Grootte en kleur schalen met het aantal IP's.

Landen bediend door SURF B.V.

Elk land waar deze organisatie IPv4-allocaties heeft, gerangschikt op aantal IPs.

The Netherlands 10.59M

ASNs in bezit van SURF B.V.

ASNNaamIPsPrefixenLand
AS1103 SURF B.V. 7.20M 120 NL
AS1101 SURF B.V. 1.90M 15 NL
AS1199 SURF B.V. 590.8K 3 NL
AS1128 SURF B.V. 196.6K 3 NL
AS1161 SURF B.V. 69.6K 2 NL
AS1133 SURF B.V. 65.5K 1 NL
AS1147 SURF B.V. 34.8K 2 NL
AS1145 SURF B.V. 4.1K 1 NL
AS1152 SURF B.V. 2.6K 2 NL
AS1102 SURF B.V. 1.3K 4 NL
AS1149 SURF B.V. 1.0K 3 NL

Grootste CIDR-bereiken

CIDRIPsPTR DensityASNLandStateCity
145.144.0.0/12 1.05M
86.5%
AS1103 NL Gelderland Wehl
145.160.0.0/12 1.05M
0.0%
AS1103 NL — —
145.192.0.0/12 1.05M
99.8%
AS1101 NL — —
145.144.0.0/13 524.3K
73.1%
AS1103 NL Gelderland Wehl
145.152.0.0/13 524.3K
100.0%
AS1199 NL — —
145.208.0.0/13 524.3K
97.7%
AS1101 NL — —
145.88.0.0/14 262.1K
18.5%
AS1103 NL South Holland Leiden
145.120.0.0/14 262.1K
50.0%
AS1103 NL Gelderland Barneveld
145.140.0.0/14 262.1K
75.0%
AS1103 NL South Holland Rotterdam
145.148.0.0/14 262.1K
0.0%
AS1103 NL — —
145.2.0.0/15 131.1K
25.2%
AS1103 NL Overijssel Deventer
145.28.0.0/15 131.1K
10.8%
AS1103 NL North Holland Spierdijk
145.38.0.0/15 131.1K
1.3%
AS1103 NL — —
145.48.0.0/15 131.1K
0.0%
AS1103 NL North Brabant Oosterhout
145.74.0.0/15 131.1K
14.7%
AS1103 NL Gelderland Nijmegen
145.92.0.0/15 131.1K
0.0%
AS1103 NL North Brabant Eindhoven
145.124.0.0/15 131.1K
0.2%
AS1103 NL — —
145.136.0.0/15 131.1K
57.9%
AS1103 NL South Holland Rotterdam
145.216.0.0/15 131.1K
95.3%
AS1101 NL — —
44.137.0.0/16 65.5K
6.2%
AS1101 US — —
129.125.0.0/16 65.5K
32.7%
AS1103 NL Groningen Groningen
130.37.0.0/16 65.5K
14.0%
AS1103 NL North Holland Amsterdam
130.89.0.0/16 65.5K
20.3%
AS1133 NL Overijssel Enschede
130.161.0.0/16 65.5K
2.0%
AS1128 NL — —
131.155.0.0/16 65.5K
44.1%
AS1161 NL North Brabant Eindhoven
131.174.0.0/16 65.5K
5.4%
AS1103 NL Gelderland Wijchen
131.180.0.0/16 65.5K
3.5%
AS1128 NL South Holland Delft
131.211.0.0/16 65.5K
19.6%
AS1103 NL Utrecht Utrecht
131.224.0.0/16 65.5K
0.8%
AS1103 NL Utrecht De Bilt
132.229.0.0/16 65.5K
10.2%
AS1103 NL South Holland Leiden
134.221.0.0/16 65.5K
3.2%
AS1103 NL — —
136.231.0.0/16 65.5K
11.8%
AS1103 NL South Holland Delft
137.56.0.0/16 65.5K
48.7%
AS1103 NL North Brabant Tilburg
137.120.0.0/16 65.5K
1.8%
AS1103 NL Limburg Maastricht
137.224.0.0/16 65.5K
0.8%
AS1103 NL Gelderland Wageningen
139.63.0.0/16 65.5K
11.2%
AS1103 NL South Holland Delft
141.252.0.0/16 65.5K
0.1%
AS1103 NL Friesland Leeuwarden
143.121.0.0/16 65.5K
1.2%
AS1103 NL Utrecht Utrecht
145.0.0.0/16 65.5K
0.4%
AS1103 NL North Holland Amsterdam
145.5.0.0/16 65.5K
28.1%
AS1103 NL South Holland Rotterdam
145.9.0.0/16 65.5K
0.0%
AS1103 NL — —
145.19.0.0/16 65.5K
29.1%
AS1103 NL Zeeland Flushing
145.20.0.0/16 65.5K
5.1%
AS1103 NL — —
145.23.0.0/16 65.5K
0.1%
AS1103 NL Utrecht Bilthoven
145.24.0.0/16 65.5K
18.4%
AS1103 NL North Holland Egmond aan den Hoef
145.33.0.0/16 65.5K
0.2%
AS1103 NL Groningen Hoogezand
145.37.0.0/16 65.5K
0.0%
AS1103 NL Groningen Groningen
145.41.0.0/16 65.5K
0.0%
AS1103 NL — —
145.44.0.0/16 65.5K
38.7%
AS1103 NL Overijssel Ommen
145.51.0.0/16 65.5K
0.6%
AS1103 NL — —
145.52.0.0/16 65.5K
1.8%
AS1103 NL South Holland The Hague
145.76.0.0/16 65.5K
0.1%
AS1103 NL Overijssel Hengelo
145.81.0.0/16 65.5K
61.1%
AS1103 NL North Holland Amsterdam
145.85.0.0/16 65.5K
0.2%
AS1103 NL North Brabant Eindhoven
145.94.0.0/16 65.5K
0.8%
AS1128 NL South Holland Delft
145.95.0.0/16 65.5K
0.0%
AS1103 NL — —
145.96.0.0/16 65.5K
98.5%
AS1103 NL — —
145.99.0.0/16 65.5K
0.0%
AS1101 NL — —
145.101.0.0/16 65.5K
66.1%
AS1103 NL North Brabant Breda
145.103.0.0/16 65.5K
100.0%
AS1103 NL South Holland The Hague
145.108.0.0/16 65.5K
89.8%
AS1103 NL North Holland Amstelveen
145.111.0.0/16 65.5K
0.0%
AS1199 NL — —
145.117.0.0/16 65.5K
100.0%
AS1103 NL North Holland Amsterdam
145.118.0.0/16 65.5K
49.9%
AS1103 NL South Holland Leiden
145.126.0.0/16 65.5K
45.0%
AS1103 NL Overijssel Enschede
145.138.0.0/16 65.5K
74.6%
AS1103 NL Overijssel Raalte
145.144.0.0/16 65.5K
0.0%
AS1103 NL Gelderland Wehl
145.147.0.0/16 65.5K
0.0%
AS1103 NL — —
145.220.0.0/16 65.5K
91.4%
AS1101 NL — —
156.83.0.0/16 65.5K
1.5%
AS1103 NL South Holland Rotterdam
192.87.0.0/16 65.5K
49.8%
AS1103 NL North Holland Amsterdam
194.171.0.0/16 65.5K
0.0%
AS1103 NL Utrecht Utrecht
195.169.0.0/16 65.5K
25.4%
AS1103 NL Utrecht Amersfoort
145.1.0.0/17 32.8K
0.0%
AS1103 NL North Holland Den Hoorn
145.97.128.0/17 32.8K
96.0%
AS1103 NL Groningen Groningen
145.98.128.0/17 32.8K
100.0%
AS1103 NL — —
145.100.128.0/17 32.8K
45.4%
AS1103 NL Limburg Venlo
145.107.128.0/17 32.8K
0.4%
AS1103 NL Utrecht Utrecht
145.127.0.0/17 32.8K
100.0%
AS1103 NL Limburg Maastricht
145.127.128.0/17 32.8K
97.1%
AS1147 NL Friesland Heerenveen
145.145.0.0/17 32.8K
0.0%
AS1103 NL — —
145.146.128.0/17 32.8K
0.0%
AS1103 NL — —
194.171.128.0/17 32.8K
50.2%
AS1103 NL Utrecht Utrecht
145.97.64.0/18 16.4K
74.9%
AS1103 NL Overijssel Saasveld
145.98.64.0/18 16.4K
0.3%
AS1103 NL — —
145.100.0.0/18 16.4K
14.1%
AS1103 NL North Holland Amsterdam
145.102.64.0/18 16.4K
64.1%
AS1103 NL North Holland Amsterdam
145.102.192.0/18 16.4K
37.5%
AS1103 NL Gelderland Nijmegen
145.107.64.0/18 16.4K
0.0%
AS1103 NL Utrecht Utrecht
145.116.64.0/18 16.4K
0.0%
AS1103 NL South Holland The Hague
145.116.128.0/18 16.4K
0.0%
AS1103 NL Gelderland Nijmegen
145.145.192.0/18 16.4K
0.0%
AS1103 NL — —
145.146.64.0/18 16.4K
0.0%
AS1103 NL — —
194.171.0.0/18 16.4K
42.7%
AS1103 NL North Holland Amsterdam
145.97.0.0/19 8.2K
31.3%
AS1103 NL Gelderland Nijmegen
145.98.32.0/19 8.2K
100.0%
AS1103 NL — —
145.100.64.0/19 8.2K
25.0%
AS1103 NL North Holland Amsterdam
145.102.32.0/19 8.2K
0.5%
AS1103 NL South Holland Leiden
145.102.160.0/19 8.2K
0.4%
AS1103 NL North Holland Beverwijk
145.107.32.0/19 8.2K
25.2%
AS1103 NL Limburg Horst aan de Maas Municipality

Frequently Asked Questions

Hoeveel IP-adressen bezit SURF B.V.?

SURF B.V. beheert 9.54M IPv4-adressen verdeeld over 156 CIDR-bereiken. De organisatie is geregistreerd in The Netherlands.

Welke ASNs beheert SURF B.V.?

SURF B.V. beheert 11 Autonomous Systems. Elke ASN vertegenwoordigt een onafhankelijk gerouteerd netwerk dat SURF B.V. beheert voor de levering van internetverkeer.

Welk type organisatie is SURF B.V.?

SURF B.V. is categorized as enterprise. Deze classificatie is gebaseerd op het primaire gebruik van de IP-adresallocaties van de organisatie.

Laatst bijgewerkt: 2026-07-25 03:55:31 UTC
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