Sistema Autônomo

AS1103

SURF B.V.

SURF B.V. The Netherlands 🌐 surf.nl

IPs Anunciados

7,195,904

Prefixos CIDR

129

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
Active-threat / abuse risk −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 Prefixo MOAS — múltiplos ASNs de origem detectados

Todas as anomalias MOAS →

Um prefixo anteriormente estável originado por AS1103 é agora também anunciado por outro ASN (MOAS — Multiple-Origin AS), detectado a partir de nossos coletores RIPE RIS. Frequentemente benigno (anycast, multi-homing ou uma transferência recente) — mas pode sinalizar um vazamento de rota ou sequestro de prefixo, então vale a pena inspecionar.

Prefixo	ASNs de Origem	Última detecção (UTC)
145.98.16.0/24	AS1103, AS1653	2026-09-10 13:40:45

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 — pegada global de IP

Cidades onde AS1103 possui alocação IPv4 mensurável. Clique em qualquer ponto para abrir a página daquela cidade. O tamanho e a cor escalam com a contagem de IP.

Ver no globo 3D →

Principais intervalos CIDR

CIDR	IPs	PTR Density	Organização	País	State	City
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
145.152.0.0/13	524.3K	0.0%	SURF B.V.	NL	—	—
145.88.0.0/14	262.1K	18.5%	SURF B.V.	NL	South Holland	Leiderdorp
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	Capelle aan den IJssel
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	Stompetoren
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	Made
145.74.0.0/15	131.1K	14.7%	SURF B.V.	NL	Gelderland	Arnhem
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
145.146.0.0/15	131.1K	0.0%	SURF B.V.	NL	—	—
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	Nijmegen
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	Delfgauw
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	Groningen
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	Vijfhuizen
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	Amsterdam
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	Gelderland	Apeldoorn
145.144.0.0/16	65.5K	0.0%	SURF B.V.	NL	Gelderland	Wehl
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	South Holland	Zoetermeer
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 Burg
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	North Brabant	Eindhoven
145.102.128.0/17	32.8K	0.0%	SURF B.V.	NL	North Holland	Amsterdam
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	Vaals
145.145.0.0/17	32.8K	0.0%	SURF B.V.	NL	—	—
192.87.0.0/17	32.8K	0.0%	SURF B.V.	NL	Drenthe	Meppel
194.171.128.0/17	32.8K	50.2%	SURF B.V.	NL	South Holland	Zoetermeer
145.97.64.0/18	16.4K	74.9%	SURF B.V.	NL	Overijssel	Enschede
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	North Brabant	Mierlo
145.145.192.0/18	16.4K	0.0%	SURF B.V.	NL	—	—
192.87.192.0/18	16.4K	0.0%	SURF B.V.	NL	South Holland	Rotterdam
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 Brabant	Breda
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	—	—
192.87.128.0/19	8.2K	0.0%	SURF B.V.	NL	North Holland	Amsterdam
194.171.64.0/19	8.2K	32.0%	SURF B.V.	NL	Groningen	Groningen
145.97.48.0/20	4.1K	94.2%	SURF B.V.	NL	Overijssel	Hengelo
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	Gelderland	Hengelo
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	—	—

Prefixos BGP Anunciados

Anomalias BGP ao vivo →

Prefixos AS1103 realmente se origina no BGP, observado em nossos coletores RIPE RIS. Esta visualização de roteamento ao vivo pode diferir da alocação de registro acima.

Prefix	Amostras de anúncio	Última vez visto
145.20.0.0/16	57,832	2026-09-10 13:26:16
145.81.0.0/16	51,351	2026-09-10 13:26:16
145.97.16.0/22	51,295	2026-09-10 13:26:16
194.104.240.0/20	50,443	2026-09-10 13:26:16
145.91.0.0/16	50,230	2026-09-10 13:26:16
194.26.12.0/22	48,092	2026-09-10 13:26:16
194.26.8.0/22	46,747	2026-09-10 13:26:16
192.42.124.0/22	44,683	2026-09-10 13:26:16
136.231.0.0/16	44,472	2026-09-10 13:26:16
145.100.0.0/15	43,699	2026-09-10 13:26:16
145.102.0.0/16	43,601	2026-09-10 13:26:16
145.38.0.0/15	43,224	2026-09-10 13:26:16
145.118.0.0/16	42,864	2026-09-10 13:26:16
145.33.0.0/16	42,732	2026-09-10 13:26:20
145.37.0.0/16	42,508	2026-09-10 13:26:20
129.125.0.0/16	42,254	2026-09-10 13:26:19
130.37.0.0/16	42,151	2026-09-10 13:26:18
145.97.128.0/18	42,082	2026-09-10 13:26:19
145.1.0.0/17	42,004	2026-09-10 13:26:16
132.229.0.0/16	41,981	2026-09-10 13:26:16
145.116.64.0/18	41,963	2026-09-10 13:26:16
145.108.0.0/16	41,839	2026-09-10 13:26:18
137.224.0.0/16	41,839	2026-09-10 13:26:16
145.97.0.0/20	41,815	2026-09-10 13:26:16
145.97.24.0/21	41,722	2026-09-10 13:26:16
192.31.231.0/24	41,669	2026-09-10 13:26:16
145.97.20.0/22	41,658	2026-09-10 13:26:16
131.224.0.0/16	41,633	2026-09-10 13:26:16
145.44.0.0/16	41,533	2026-09-10 13:26:16
145.107.24.0/22	41,312	2026-09-10 13:26:16
145.97.48.0/20	41,084	2026-09-10 13:26:16
145.103.0.0/16	41,004	2026-09-10 13:26:20
145.51.0.0/16	40,842	2026-09-10 13:26:16
145.41.0.0/16	40,743	2026-09-10 13:26:16
145.48.0.0/15	40,669	2026-09-10 13:26:16
145.24.0.0/16	40,648	2026-09-10 13:26:16
145.124.0.0/15	40,624	2026-09-10 13:26:16
145.98.0.0/16	40,602	2026-09-10 13:26:16
194.104.124.0/23	40,601	2026-09-10 13:26:16
145.98.16.0/24	40,368	2026-09-10 13:26:16
193.177.176.0/22	40,175	2026-09-10 13:26:16
193.176.235.0/24	39,927	2026-09-10 13:26:16
141.252.0.0/16	39,744	2026-09-10 13:26:16
145.9.0.0/16	39,596	2026-09-10 13:26:16
195.169.0.0/16	39,441	2026-09-10 13:26:16
145.126.0.0/16	39,394	2026-09-10 13:26:16
145.107.0.0/16	39,281	2026-09-10 13:26:16
131.174.0.0/16	39,258	2026-09-10 13:26:16
145.140.0.0/14	38,855	2026-09-10 13:26:16
194.171.0.0/16	38,848	2026-09-10 13:26:16

Mostrando os principais 50 of 100 prefixos anunciados por volume de amostras.

Frequently Asked Questions

O que é AS1103?

AS1103 é um Autonomous System Number atribuído a SURF B.V.. Um ASN identifica uma rede que controla um conjunto específico de endereços IP e determina como o tráfego é roteado pela internet via BGP (Border Gateway Protocol).

Quantos endereços IP o AS1103 anuncia?

AS1103 anuncia 7.20M endereços IPv4 distribuídos por 129 prefixos CIDR roteados. A rede está registrada em The Netherlands.

Quem opera o AS1103?

AS1103 é operado por SURF B.V.. A organização está sediada em The Netherlands. Você pode ver todos os intervalos de IP e ASNs relacionados na página da organização.

Em que país o AS1103 está registrado?

AS1103 está registrado em The Netherlands. Isso indica onde o operador de rede está sediado, embora os endereços IP que ele anuncia possam atender usuários globalmente.

Última atualização: 2026-09-10 13:39:05 UTC