$ query “AS47720” --type=asn → 1 result(s)
AS47720 · CIX-AS
Cork Internet Exchange Limited
AS47720 belongs to Cork Internet Exchange Limited and is a mid-size transit provider, registered in Ireland since 2008. The system announces a respectable 15 872 IPv4 addresses, and supports IPv6. The bulk of its IP address space is in Ireland.
- Top 5% — Top 5% of all autonomous systems by reach and degree
- #8 in Ireland — Top 10 by reach within country
Basic Information
- Country
- 🇮🇪 Ireland
- Category
- Internet Service Provider
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- August 07, 2008
- Last Changed
- April 30, 2026
- Last Seen
- April 30, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 14 / 11
- IPv6 Prefixes (raw / aggregated)
- 3 / 3
- IPv4 Addresses
- 15 872
- Largest IPv4 Prefix
- /20 (4 096 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇮🇪 Ireland (27 760 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 3 upstreams providing transit
- Peers
- 69 networks exchanging traffic without transit
- Downstream Customers
- 8 downstreams buying transit
- Unclassified
- 3 unclassified BGP neighbors
- Degree
- 83 unique BGP neighbors
- Reach
- 13 networks in customer cone
Upstream Providers (3)
Prefix Lists
IPv4 Prefixes (14 total)
- 217.74.48.0/20 (4 096 addresses (/20 prefix))
- 84.39.232.0/21 (2 048 addresses (/21 prefix))
- 89.31.168.0/21 (2 048 addresses (/21 prefix))
- 91.103.0.0/21 (2 048 addresses (/21 prefix))
- 185.49.60.0/22 (1 024 addresses (/22 prefix))
- 185.57.116.0/22 (1 024 addresses (/22 prefix))
- 185.137.20.0/22 (1 024 addresses (/22 prefix))
- 185.175.168.0/22 (1 024 addresses (/22 prefix))
- 185.176.0.0/22 (1 024 addresses (/22 prefix))
- 45.140.144.0/24 (256 addresses (/24 prefix))
- 91.223.9.0/24 (256 addresses (/24 prefix))
IPv6 Prefixes (3 total)
- 2a02:2078::/32
- 2a02:5b20::/32
- 2607:6b80:3d::/48