$ query “AS51088” --type=asn → 1 result(s)
AS51088 — A2B
A2B IP B.V.
AS51088 is a mid-size transit provider operated by A2B IP B.V., established in the Netherlands in 2010. The network announces a respectable 34 560 IPv4 addresses. Supports IPv6.
- Top 5% — Top 5% of all autonomous systems by reach and degree
Basic Information
- Country
- 🇳🇱 Netherlands
- Category
- Internet Service Provider
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- May 28, 2010
- Last Changed
- March 04, 2026
- Last Seen
- March 05, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 58 / 44
- IPv6 Prefixes (raw / aggregated)
- 19 / 18
- IPv4 Addresses
- 34 560
- Largest IPv4 Prefix
- /20 (4 096 addresses)
- Largest IPv6 Prefix
- /29
- Geolocated Countries
- 🇳🇱 NL (79 IPs), 🇦🇺 AU (3 IPs), 🇧🇪 BE (2 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Good — 1 flagged IPs out of 34 560 total (0.00%)
Connectivity Summary
- Upstream Providers
- 3 upstream autonomous systems providing transit
- Peers
- 667 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 31 downstream autonomous systems buying transit
- Degree
- 702 unique BGP neighbors (providers + customers + peers)
- Reach
- 60 — customer cone size measuring network influence
- Degree Rank
- #212
- Reach Rank
- #1 406
Upstream Providers (3)
Prefix Lists
IPv4 Prefixes (58 total)
- 46.244.0.0/20 (4 096 addresses)
- 31.134.200.0/21 (2 048 addresses)
- 46.244.24.0/21 (2 048 addresses)
- 46.244.120.0/21 (2 048 addresses)
- 93.93.120.0/21 (2 048 addresses)
- 178.249.152.0/21 (2 048 addresses)
- 46.244.20.0/22 (1 024 addresses)
- 46.244.100.0/22 (1 024 addresses)
- 46.244.104.0/22 (1 024 addresses)
- 185.30.204.0/22 (1 024 addresses)
- 185.34.220.0/22 (1 024 addresses)
- 185.41.124.0/22 (1 024 addresses)
- 185.44.244.0/22 (1 024 addresses)
- 185.63.244.0/22 (1 024 addresses)
- 185.205.52.0/22 (1 024 addresses)
- 185.225.220.0/22 (1 024 addresses)
- 185.240.112.0/22 (1 024 addresses)
- 192.166.96.0/22 (1 024 addresses)
- 46.244.16.0/23 (512 addresses)
- 46.244.112.0/23 (512 addresses)
- 185.37.4.0/23 (512 addresses)
- 185.51.52.0/23 (512 addresses)
- 193.169.108.0/23 (512 addresses)
- 5.10.192.0/24 (256 addresses)
- 31.41.255.0/24 (256 addresses)
- 45.85.191.0/24 (256 addresses)
- 46.175.131.0/24 (256 addresses)
- 62.3.55.0/24 (256 addresses)
- 62.68.84.0/24 (256 addresses)
- 91.213.13.0/24 (256 addresses)
- 92.249.7.0/24 (256 addresses)
- 93.190.124.0/24 (256 addresses)
- 146.19.97.0/24 (256 addresses)
- 178.211.151.0/24 (256 addresses)
- 185.37.6.0/24 (256 addresses)
- 185.40.254.0/24 (256 addresses)
- 185.46.173.0/24 (256 addresses)
- 185.217.118.0/24 (256 addresses)
- 185.218.207.0/24 (256 addresses)
- 188.95.143.0/24 (256 addresses)
- 193.39.250.0/24 (256 addresses)
- 193.108.238.0/24 (256 addresses)
- 193.110.189.0/24 (256 addresses)
- 212.24.126.0/24 (256 addresses)
IPv6 Prefixes (19 total)
- 2a05:2900::/29
- 2a0a:e80::/29
- 2a0b:1c0::/29
- 2a0f:ba00::/29
- 2a0f:d440::/29
- 2a12:4180::/29
- 2a13:800::/29
- 2a13:2c00::/29
- 2a13:3400::/29
- 2a02:166a::/31
- 2a01:77e0::/32
- 2a02:1668::/32
- 2a02:2738::/32
- 2a04:6dc0::/32
- 2a06:2602::/32
- 2a14:12c0::/32
- 2001:67c:eb0::/48
- 2001:67c:1064::/48