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Autonomous System details for AS51088

AS51088

A2B IP B.V. • a2b-internet.com

AS51088 — A2B IP B.V.

AS Name

A2B

Country

The Netherlands (NL)

Website

a2b-internet.com

Number of IPv4

34,304

Number of IPv6

6.34 × 10³⁰

ASN type

ISP

Status

Allocated

Registry

RIPE

Allocated

May 28, 2010

Last updated

January 20, 2026

IP Ranges

57 IPv4 prefixes, 19 IPv6 prefixes

Prefix	Company	Number of IPs
5.10.192.0/24	A2B IP B.V.	256
31.41.255.0/24	A2B IP B.V.	256
31.134.200.0/21	A2B IP B.V.	2,048
45.85.191.0/24	Inetactief	256
46.175.131.0/24	DC1.AMSTERDAM Cooperatie U.A.	256
46.244.0.0/21	A2B IP B.V.	2,048
46.244.8.0/22	Shioda	1,024
46.244.12.0/23	A2B IP B.V.	512
46.244.14.0/23	Hot-Pinguin	512
46.244.16.0/23	Cloud2	512
46.244.20.0/24	A2B IP B.V.	256
46.244.21.0/24	SHADOWSRV	256
46.244.22.0/24	SHADOWSRV	256
46.244.23.0/24	ISC-SANS	256
46.244.24.0/22	A2B IP B.V.	1,024
46.244.28.0/24	A2B IP B.V.	256
46.244.29.0/24	A2B IP B.V.	256
46.244.30.0/24	A2B IP B.V.	256
46.244.31.0/24	A2B IP B.V.	256
46.244.100.0/22	A2B IP B.V.	1,024
46.244.104.0/22	A2B IP B.V.	1,024
46.244.112.0/23	A2B IP B.V.	512
46.244.120.0/23	A2B IP B.V.	512
46.244.122.0/23	A2B IP B.V.	512
46.244.124.0/23	A2B IP B.V.	512
46.244.126.0/24	A2B IP B.V.	256
46.244.127.0/24	A2B Internet	256
62.3.55.0/24	A2B IP B.V.	256
62.68.84.0/24	Eljakim Information Technology B.V.	256
91.213.13.0/24	Easy Networking B.V.	256
93.93.120.0/21	Alkmaar internetworking	2,048
93.190.124.0/24	Infra-Commerce Investments B.V.	256
146.19.97.0/24	A2B IP B.V.	256
178.211.151.0/24	SyncForce B.V.	256
178.249.152.0/21	infra-aw	2,048
185.30.204.0/22	Justspark Managed IT B.V.	1,024
185.34.220.0/22	Shioda Holding BV	1,024
185.37.4.0/23	ATSC Infrastructure	512
185.37.6.0/24	ATSC B.V. Role-Object	256
185.40.254.0/24	De Ruiter Network Company B.V.	256
185.41.124.0/22	mijnpartnergroep.nl VOF	1,024
185.44.244.0/22	Kantoor	1,024
185.46.173.0/24	DC1.AMSTERDAM Cooperatie U.A.	256
185.51.52.0/23	A2B IP B.V.	512
185.63.244.0/22	It's Us Hosting Environment	1,024
185.205.52.0/22	A2B IP B.V.	1,024
185.217.118.0/24	Wild ICT BV	256
185.218.207.0/24	DC1.AMSTERDAM Cooperatie U.A.	256
185.225.220.0/22	Ekco B.V.	1,024
185.240.112.0/22	Ekco B.V.	1,024
188.95.143.0/24	NETAFFAIRS	256
192.166.96.0/22	Effect ICT Solutions B.V.	1,024
193.39.250.0/24	Edward van der Jagt B.V.	256
193.108.238.0/24	Easy Networking B.V.	256
193.110.189.0/24	Infra-Commerce Investments B.V.	256
193.169.108.0/23	RENZO LISSENBERG	512
212.24.126.0/24	A2B IP B.V.	256
2001:67c:eb0::/48	Good Cloud BV	1.21 × 10²⁴
2001:67c:1064::/48	Easy Networking B.V.	1.21 × 10²⁴
2a01:77e0::/32	Ekco B.V.	7.92 × 10²⁸
2a02:1668::/32	A2B IP B.V.	7.92 × 10²⁸
2a02:166a::/32	FTTH range	7.92 × 10²⁸
2a02:166b::/32	A2B IP B.V.	7.92 × 10²⁸
2a02:2738::/32	Gemeente Alkmaar	7.92 × 10²⁸
2a04:6dc0::/32	Advanced Team Systems Center B.V.	7.92 × 10²⁸
2a05:2900::/29	A2B IP B.V.	6.34 × 10²⁹
2a06:2602::/32	A2B IP B.V.	7.92 × 10²⁸
2a0a:e80::/29	A2B IP B.V.	6.34 × 10²⁹
2a0b:1c0::/29	A2B IP B.V.	6.34 × 10²⁹
2a0f:ba00::/29	A2B IP B.V.	6.34 × 10²⁹
2a0f:d440::/29	Infra-Commerce Investments B.V.	6.34 × 10²⁹
2a12:4180::/29	DC1.AMSTERDAM Cooperatie U.A.	6.34 × 10²⁹
2a13:800::/29	A2B IP B.V.	6.34 × 10²⁹
2a13:2c00::/29	A2B IP B.V.	6.34 × 10²⁹
2a13:3400::/29	A2B IP B.V.	6.34 × 10²⁹
2a14:12c0::/32	Eljakim Information Technology B.V.	7.92 × 10²⁸

IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.

Peers of AS51088

103 peers

AS286 AS714 AS1103 AS1126 AS2119 AS2603 AS2611 AS2906 AS4455 AS5390 AS6461 AS6507 AS6667 AS6774 AS8075 AS8220 AS8283 AS8365 AS8368 AS8447 AS8674 AS8763 AS8881 AS9150 AS10310 AS12399 AS12414 AS12859 AS13030 AS13101 AS13285 AS13335 AS14061 AS15169 AS15703 AS15830 AS16265 AS16276 AS16298 AS16509 AS19679 AS20495 AS20562 AS25151 AS25182 AS29119 AS29169 AS30132 AS30781 AS32934 AS34288 AS34756 AS38965 AS39647 AS39704 AS41692 AS42708 AS42755 AS43531 AS44854 AS45009 AS49134 AS49544 AS49685 AS49820 AS50266 AS50295 AS50655 AS50673 AS3303 AS3856 AS7342 AS8315 AS8657 AS15435 AS20940 AS31529 AS32590 AS44066 AS44439 AS50522 AS206389 AS51430 AS51942 AS57112 AS57976 AS58075 AS58299 AS59985 AS60557 AS200132 AS202562 AS202585 AS206238 AS207994 AS208501 AS211251 AS211623 AS211786 AS212635 AS212855 AS213052 AS399668

AS51088 peers with these other Autonomous Systems.

Peering is a direct, often free, traffic exchange between Autonomous Systems (ASNs). They share routes only to their own networks and customers, making connections faster and cheaper for that specific traffic, without providing full internet access to each other.

Upstreams of AS51088

4 upstreams

AS3257 AS8455 AS39686 AS207176

AS51088 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS51088 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS51088

30 downstreams

AS973 AS8298 AS12902 AS15562 AS20953 AS24642 AS31019 AS35027 AS39855 AS42703 AS50119 AS50559 AS52102 AS52199 AS57129 AS60131 AS60358 AS60479 AS64404 AS199292 AS199670 AS201995 AS202656 AS203919 AS205668 AS207179 AS210449 AS213577 AS213773 AS214988

AS51088 provides internet connectivity to these downstream Autonomous Systems.

A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.