$ query “AS13037” --type=asn → 1 result(s)
AS13037 — ZEN-AS
Zen Internet Ltd
AS13037 is a residential access provider run by Zen Internet Ltd, registered in the United Kingdom since 2002. The network announces a solid 528 128 IPv4 addresses, including a /15. Supports IPv6.
Basic Information
- Country
- 🇬🇧 United Kingdom
- Category
- Internet Service Provider
- Network Role
- Access Provider
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- September 20, 2002
- Last Changed
- March 04, 2026
- Last Seen
- March 05, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 38 / 37
- IPv6 Prefixes (raw / aggregated)
- 1 / 1
- IPv4 Addresses
- 528 128
- Largest IPv4 Prefix
- /15 (131 072 addresses)
- Largest IPv6 Prefix
- /29
- Geolocated Countries
- 🇬🇧 GB (52 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Good — 15 flagged IPs out of 528 128 total (0.00%)
- Open Proxies
- 1 known open proxies in this network
Connectivity Summary
- Upstream Providers
- 3 upstream autonomous systems providing transit
- Peers
- 94 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 3 downstream autonomous systems buying transit
- Degree
- 101 unique BGP neighbors (providers + customers + peers)
- Reach
- 3 — customer cone size measuring network influence
- Degree Rank
- #1 498
- Reach Rank
- #5 390
Upstream Providers (3)
Prefix Lists
IPv4 Prefixes (38 total)
- 82.68.0.0/15 (131 072 addresses)
- 51.148.0.0/16 (65 536 addresses)
- 51.155.0.0/16 (65 536 addresses)
- 82.71.0.0/16 (65 536 addresses)
- 217.155.0.0/16 (65 536 addresses)
- 62.3.64.0/18 (16 384 addresses)
- 77.104.128.0/18 (16 384 addresses)
- 88.97.0.0/18 (16 384 addresses)
- 146.66.64.0/18 (16 384 addresses)
- 88.98.32.0/19 (8 192 addresses)
- 88.98.64.0/19 (8 192 addresses)
- 88.98.128.0/19 (8 192 addresses)
- 212.23.0.0/19 (8 192 addresses)
- 88.97.64.0/20 (4 096 addresses)
- 88.97.96.0/20 (4 096 addresses)
- 88.98.0.0/20 (4 096 addresses)
- 88.98.176.0/20 (4 096 addresses)
- 188.122.32.0/20 (4 096 addresses)
- 88.98.24.0/21 (2 048 addresses)
- 88.98.160.0/21 (2 048 addresses)
- 188.122.48.0/21 (2 048 addresses)
- 88.97.88.0/22 (1 024 addresses)
- 88.98.172.0/22 (1 024 addresses)
- 185.81.232.0/22 (1 024 addresses)
- 185.169.116.0/22 (1 024 addresses)
- 185.183.100.0/22 (1 024 addresses)
- 188.122.56.0/22 (1 024 addresses)
- 88.98.16.0/23 (512 addresses)
- 88.98.22.0/23 (512 addresses)
- 88.98.170.0/23 (512 addresses)
- 188.122.60.0/23 (512 addresses)
- 193.19.156.0/23 (512 addresses)
- 88.98.18.0/24 (256 addresses)
- 88.98.21.0/24 (256 addresses)
- 91.235.214.0/24 (256 addresses)
- 185.6.135.0/24 (256 addresses)
- 188.122.63.0/24 (256 addresses)
IPv6 Prefixes (1 total)
- 2a02:8010::/29