$ query “AS21320” --type=asn → 1 result(s)
AS21320 · GEANT-IAS-VRF
GEANT Vereniging
AS21320 is run by GEANT Vereniging and is a mid-size transit provider, established in the Netherlands in 2001. The system announces 2 048 IPv4 addresses, and supports IPv6. Its primary geographic footprint is in the United Kingdom.
- Top 5% — Top 5% of all autonomous systems by reach and degree
- #10 in Netherlands — Top 10 by reach within country
Basic Information
- Country
- 🇳🇱 Netherlands
- Category
- Hosting
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- October 31, 2001
- Last Changed
- March 04, 2026
- Last Seen
- June 22, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 1 / 1
- IPv6 Prefixes (raw / aggregated)
- 1 / 1
- IPv4 Addresses
- 2 048
- Largest IPv4 Prefix
- /21 (2 048 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇬🇧 United Kingdom (4 096 IPs)
- Prefix Changed
- April 09, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 2 upstreams providing transit
- Peers
- 119 networks exchanging traffic without transit
- Downstream Customers
- 33 downstreams buying transit
- Degree
- 154 unique BGP neighbors
- Reach
- 1 033 networks in customer cone
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (1 total)
- 83.97.88.0/21 (2 048 addresses (/21 prefix))
IPv6 Prefixes (1 total)
- 2001:799::/32