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自治系统

AS1103

SURF B.V.

SURF B.V. The Netherlands 🌐 surf.nl
已宣布的 IP 地址
7,195,648
CIDR 前缀
120
ASN
AS1103

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.

57/100
Caution
How this score is built
  • Baseline (neutral) 65
  • Multiple-origin (MOAS) routing anomaly −12
  • Enterprise allocation +4
  • Trust score 57 / 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)
Official website ↗ Summary from Wikipedia, CC BY-SA 4.0 · Data from Wikidata

⚠ 1 MOAS 前缀 — 检测到多源 ASNs

所有 MOAS 异常 →

此前由 AS1103 公告的稳定前缀现在也由另一个 ASN 公告（MOAS — 多源 AS），这是通过我们的 RIPE RIS 收集器检测到的。这通常是良性的（任播、多宿主或近期转移）—— 但它可能预示着路由泄漏或前缀劫持，因此值得检查。

前缀源 ASNs最后检测 (UTC)
145.98.16.0/24 AS1103, AS1653 2026-07-25 04:53:54

Network profile

Source: PeeringDB →
Network type Educational/Research
Traffic level 500-1000Gbps
Geographic scope Europe
Traffic ratio Mostly Inbound
Peering policy Open
IRR record AS1103:AS-SURF

Present at 3 internet exchanges: NL-ix: Main, AMS-IX, Frys-IX

Website ↗

AS1103 — 全球 IP 足迹

AS 所在城市1103 拥有可衡量的 IPv4 分配。点击任意圆点可打开该城市的页面。大小和颜色随 IP 数量变化。

在 3D 地球上查看 →

热门 CIDR 范围

CIDRIP 地址PTR Density组织国家StateCity
145.144.0.0/12 1.05M
86.5%
SURF B.V. NL Gelderland Wehl
145.160.0.0/12 1.05M
0.0%
SURF B.V. NL — —
145.144.0.0/13 524.3K
73.1%
SURF B.V. NL Gelderland Wehl
145.88.0.0/14 262.1K
18.5%
SURF B.V. NL South Holland Leiden
145.120.0.0/14 262.1K
50.0%
SURF B.V. NL Gelderland Barneveld
145.140.0.0/14 262.1K
75.0%
SURF B.V. NL South Holland Rotterdam
145.148.0.0/14 262.1K
0.0%
SURF B.V. NL — —
145.2.0.0/15 131.1K
25.2%
SURF B.V. NL Overijssel Deventer
145.28.0.0/15 131.1K
10.8%
SURF B.V. NL North Holland Spierdijk
145.38.0.0/15 131.1K
1.3%
SURF B.V. NL — —
145.48.0.0/15 131.1K
0.0%
SURF B.V. NL North Brabant Oosterhout
145.74.0.0/15 131.1K
14.7%
SURF B.V. NL Gelderland Nijmegen
145.92.0.0/15 131.1K
0.0%
SURF B.V. NL North Brabant Eindhoven
145.124.0.0/15 131.1K
0.2%
SURF B.V. NL — —
145.136.0.0/15 131.1K
57.9%
SURF B.V. NL South Holland Rotterdam
129.125.0.0/16 65.5K
32.7%
SURF B.V. NL Groningen Groningen
130.37.0.0/16 65.5K
14.0%
SURF B.V. NL North Holland Amsterdam
131.174.0.0/16 65.5K
5.4%
SURF B.V. NL Gelderland Wijchen
131.211.0.0/16 65.5K
19.6%
SURF B.V. NL Utrecht Utrecht
131.224.0.0/16 65.5K
0.8%
SURF B.V. NL Utrecht De Bilt
132.229.0.0/16 65.5K
10.2%
SURF B.V. NL South Holland Leiden
134.221.0.0/16 65.5K
3.2%
SURF B.V. NL — —
136.231.0.0/16 65.5K
11.8%
SURF B.V. NL South Holland Delft
137.56.0.0/16 65.5K
48.7%
SURF B.V. NL North Brabant Tilburg
137.120.0.0/16 65.5K
1.8%
SURF B.V. NL Limburg Maastricht
137.224.0.0/16 65.5K
0.8%
SURF B.V. NL Gelderland Wageningen
139.63.0.0/16 65.5K
11.2%
SURF B.V. NL South Holland Delft
141.252.0.0/16 65.5K
0.1%
SURF B.V. NL Friesland Leeuwarden
143.121.0.0/16 65.5K
1.2%
SURF B.V. NL Utrecht Utrecht
145.0.0.0/16 65.5K
0.4%
SURF B.V. NL North Holland Amsterdam
145.5.0.0/16 65.5K
28.1%
SURF B.V. NL South Holland Rotterdam
145.9.0.0/16 65.5K
0.0%
SURF B.V. NL — —
145.19.0.0/16 65.5K
29.1%
SURF B.V. NL Zeeland Flushing
145.20.0.0/16 65.5K
5.1%
SURF B.V. NL — —
145.23.0.0/16 65.5K
0.1%
SURF B.V. NL Utrecht Bilthoven
145.24.0.0/16 65.5K
18.4%
SURF B.V. NL North Holland Egmond aan den Hoef
145.33.0.0/16 65.5K
0.2%
SURF B.V. NL Groningen Hoogezand
145.37.0.0/16 65.5K
0.0%
SURF B.V. NL Groningen Groningen
145.41.0.0/16 65.5K
0.0%
SURF B.V. NL — —
145.44.0.0/16 65.5K
38.7%
SURF B.V. NL Overijssel Ommen
145.51.0.0/16 65.5K
0.6%
SURF B.V. NL — —
145.52.0.0/16 65.5K
1.8%
SURF B.V. NL South Holland The Hague
145.76.0.0/16 65.5K
0.1%
SURF B.V. NL Overijssel Hengelo
145.81.0.0/16 65.5K
61.1%
SURF B.V. NL North Holland Amsterdam
145.85.0.0/16 65.5K
0.2%
SURF B.V. NL North Brabant Eindhoven
145.95.0.0/16 65.5K
0.0%
SURF B.V. NL — —
145.96.0.0/16 65.5K
98.5%
SURF B.V. NL — —
145.101.0.0/16 65.5K
66.1%
SURF B.V. NL North Brabant Breda
145.103.0.0/16 65.5K
100.0%
SURF B.V. NL South Holland The Hague
145.108.0.0/16 65.5K
89.8%
SURF B.V. NL North Holland Amstelveen
145.117.0.0/16 65.5K
100.0%
SURF B.V. NL North Holland Amsterdam
145.118.0.0/16 65.5K
49.9%
SURF B.V. NL South Holland Leiden
145.126.0.0/16 65.5K
45.0%
SURF B.V. NL Overijssel Enschede
145.138.0.0/16 65.5K
74.6%
SURF B.V. NL Overijssel Raalte
145.144.0.0/16 65.5K
0.0%
SURF B.V. NL Gelderland Wehl
145.147.0.0/16 65.5K
0.0%
SURF B.V. NL — —
156.83.0.0/16 65.5K
1.5%
SURF B.V. NL South Holland Rotterdam
192.87.0.0/16 65.5K
49.8%
SURF B.V. NL North Holland Amsterdam
194.171.0.0/16 65.5K
0.0%
SURF B.V. NL Utrecht Utrecht
195.169.0.0/16 65.5K
25.4%
SURF B.V. NL Utrecht Amersfoort
145.1.0.0/17 32.8K
0.0%
SURF B.V. NL North Holland Den Hoorn
145.97.128.0/17 32.8K
96.0%
SURF B.V. NL Groningen Groningen
145.98.128.0/17 32.8K
100.0%
SURF B.V. NL — —
145.100.128.0/17 32.8K
45.4%
SURF B.V. NL Limburg Venlo
145.107.128.0/17 32.8K
0.4%
SURF B.V. NL Utrecht Utrecht
145.127.0.0/17 32.8K
100.0%
SURF B.V. NL Limburg Maastricht
145.145.0.0/17 32.8K
0.0%
SURF B.V. NL — —
145.146.128.0/17 32.8K
0.0%
SURF B.V. NL — —
194.171.128.0/17 32.8K
50.2%
SURF B.V. NL Utrecht Utrecht
145.97.64.0/18 16.4K
74.9%
SURF B.V. NL Overijssel Saasveld
145.98.64.0/18 16.4K
0.3%
SURF B.V. NL — —
145.100.0.0/18 16.4K
14.1%
SURF B.V. NL North Holland Amsterdam
145.102.64.0/18 16.4K
64.1%
SURF B.V. NL North Holland Amsterdam
145.102.192.0/18 16.4K
37.5%
SURF B.V. NL Gelderland Nijmegen
145.107.64.0/18 16.4K
0.0%
SURF B.V. NL Utrecht Utrecht
145.116.64.0/18 16.4K
0.0%
SURF B.V. NL South Holland The Hague
145.116.128.0/18 16.4K
0.0%
SURF B.V. NL Gelderland Nijmegen
145.145.192.0/18 16.4K
0.0%
SURF B.V. NL — —
145.146.64.0/18 16.4K
0.0%
SURF B.V. NL — —
194.171.0.0/18 16.4K
42.7%
SURF B.V. NL North Holland Amsterdam
145.97.0.0/19 8.2K
31.3%
SURF B.V. NL Gelderland Nijmegen
145.98.32.0/19 8.2K
100.0%
SURF B.V. NL — —
145.100.64.0/19 8.2K
25.0%
SURF B.V. NL North Holland Amsterdam
145.102.32.0/19 8.2K
0.5%
SURF B.V. NL South Holland Leiden
145.102.160.0/19 8.2K
0.4%
SURF B.V. NL North Holland Beverwijk
145.107.32.0/19 8.2K
25.2%
SURF B.V. NL Limburg Horst aan de Maas Municipality
145.116.224.0/19 8.2K
0.0%
SURF B.V. NL Overijssel Borne
145.145.128.0/19 8.2K
0.0%
SURF B.V. NL — —
145.146.32.0/19 8.2K
0.0%
SURF B.V. NL — —
194.171.64.0/19 8.2K
32.0%
SURF B.V. NL South Holland Leiden
145.97.48.0/20 4.1K
94.2%
SURF B.V. NL Overijssel Vroomshoop
145.98.16.0/20 4.1K
93.7%
SURF B.V. NL — —
145.100.96.0/20 4.1K
16.9%
SURF B.V. NL North Holland Amsterdam
145.102.16.0/20 4.1K
51.1%
SURF B.V. NL — —
145.102.144.0/20 4.1K
100.0%
SURF B.V. NL North Brabant Eindhoven
145.107.16.0/20 4.1K
0.0%
SURF B.V. NL — —
145.116.192.0/20 4.1K
11.6%
SURF B.V. NL — —
145.145.176.0/20 4.1K
0.0%
SURF B.V. NL — —
145.146.16.0/20 4.1K
0.0%
SURF B.V. NL — —
194.13.16.0/20 4.1K
0.0%
SURF B.V. NL — —

BGP 公告前缀

实时 BGP 异常 →

前缀 AS1103 实际源自 BGP，通过我们的 RIPE RIS 收集器观测。此实时路由视图可能与上述注册分配有所不同。

Prefix公告样本最后观测
145.81.0.0/16 31,257 2026-07-25 04:54:53
145.97.16.0/22 26,284 2026-07-25 04:54:53
145.20.0.0/16 25,573 2026-07-25 04:54:53
136.231.0.0/16 23,971 2026-07-25 04:54:53
145.33.0.0/16 23,822 2026-07-25 04:54:59
145.37.0.0/16 23,633 2026-07-25 04:54:59
145.100.0.0/15 22,989 2026-07-25 04:54:52
145.102.0.0/16 22,951 2026-07-25 04:54:52
145.38.0.0/15 22,618 2026-07-25 04:54:52
131.224.0.0/16 22,550 2026-07-25 04:54:16
145.118.0.0/16 22,182 2026-07-25 04:54:52
145.98.0.0/16 22,085 2026-07-25 04:54:16
132.229.0.0/16 21,924 2026-07-25 04:54:53
192.42.124.0/22 21,918 2026-07-25 04:54:53
145.97.0.0/20 21,840 2026-07-25 04:54:53
137.224.0.0/16 21,825 2026-07-25 04:54:53
145.116.64.0/18 21,803 2026-07-25 04:54:53
145.97.20.0/22 21,803 2026-07-25 04:54:53
145.97.24.0/21 21,800 2026-07-25 04:54:53
145.107.0.0/16 21,741 2026-07-25 04:54:16
145.96.0.0/16 21,738 2026-07-25 04:54:16
145.44.0.0/16 21,608 2026-07-25 04:54:53
131.174.0.0/16 21,593 2026-07-25 04:54:16
145.48.0.0/15 21,463 2026-07-25 04:54:16
145.107.24.0/22 21,289 2026-07-25 04:54:53
145.103.0.0/16 21,284 2026-07-25 04:54:59
145.97.48.0/20 21,275 2026-07-25 04:54:53
145.41.0.0/16 20,873 2026-07-25 04:54:53
130.37.0.0/16 20,676 2026-07-25 04:54:57
145.108.0.0/16 20,504 2026-07-25 04:54:57
145.98.16.0/24 20,428 2026-07-25 04:54:53
192.31.231.0/24 20,245 2026-07-25 04:54:55
194.104.124.0/23 20,216 2026-07-25 04:54:55
145.51.0.0/16 20,180 2026-07-25 04:54:55
194.104.240.0/20 20,140 2026-07-25 04:54:55
193.176.235.0/24 20,122 2026-07-25 04:54:53
194.26.12.0/22 20,106 2026-07-25 04:54:55
145.24.0.0/16 20,050 2026-07-25 04:54:55
145.91.0.0/16 20,024 2026-07-25 04:54:55
193.177.176.0/22 20,015 2026-07-25 04:54:55
141.252.0.0/16 19,930 2026-07-25 04:54:55
194.13.16.0/20 19,857 2026-07-25 04:54:53
145.124.0.0/15 19,849 2026-07-25 04:54:52
145.9.0.0/16 19,187 2026-07-25 04:54:53
195.169.0.0/16 18,902 2026-07-25 04:54:52
145.126.0.0/16 18,713 2026-07-25 04:54:52
194.171.0.0/16 18,272 2026-07-25 04:54:52
145.137.128.0/18 18,183 2026-07-25 04:54:53
145.120.0.0/14 17,864 2026-07-25 04:54:52
145.140.0.0/14 17,689 2026-07-25 04:54:52

显示前 50 of 100 按样本量公告的前缀。

Frequently Asked Questions

什么是 AS1103？

AS1103 是分配给 SURF B.V. 的自治系统编号 (Autonomous System Number)。ASN 标识一个控制特定 IP 地址集的网络，并通过 BGP（边界网关协议）确定流量如何在互联网上传输。

AS1103 公告了多少个 IP 地址？

AS1103 公告了 7.20M 个 IPv4 地址，分布在 120 个路由 CIDR 前缀中。 该网络在 The Netherlands 注册。

谁运营 AS1103？

AS1103 由 SURF B.V. 运营。 该组织总部位于 The Netherlands。 您可以在组织页面查看所有 IP 范围和相关 ASNs。

AS1103 在哪个国家注册？

AS1103 在 The Netherlands 注册。这表明网络运营商的总部所在地，尽管其公告的 IP 地址可能服务全球用户。

最后更新：2026-07-25 04:55:31 UTC
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