Autonomous System

AS197524 Leonet GmbH

ISPActiveGermanyRIPE

AS197524 (CCNST-AS) is an ISP network operated by Leonet GmbH in Germany, registered with RIPE. It has 9 IPv4 prefixes with 52,224 addresses and 2 IPv6 prefixes, which makes it the 4,244th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses52,224in 9 prefixes
IPv6 prefixes2≈ 1.3 × 10³⁰ addresses
Size rank#4,244of 82,200 active ASNs
Abuser scoreVery Low0.03% of its addresses flagged · method

Details

OrganizationLeonet GmbH
AS nameCCNST-AS
Websiteleonet.de
Country Germany (DE)
Network typeISP
RegistryRIPE
Abuse contactabuse@leonet.de
Registered2011-01-18
Last updated2026-09-07

IPv4 prefixes

9 prefixes · 52,224 addresses
NetworkAddressesFirst – last address
88.133.0.0/1732,76888.133.0.0 – 88.133.127.255
109.199.160.0/198,192109.199.160.0 – 109.199.191.255
88.133.128.0/204,09688.133.128.0 – 88.133.143.255
5.22.240.0/212,0485.22.240.0 – 5.22.247.255
88.133.156.0/221,02488.133.156.0 – 88.133.159.255
91.235.8.0/221,02491.235.8.0 – 91.235.11.255
185.9.64.0/221,024185.9.64.0 – 185.9.67.255
185.18.36.0/221,024185.18.36.0 – 185.18.39.255
185.93.200.0/221,024185.93.200.0 – 185.93.203.255

IPv6 prefixes

2 prefixes
  • 2a01:a980::/29
  • 2a05:fa40::/29

Query AS197524 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS197524&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS197524, with or without a key:

curl "https://api.ipapi.is/?q=88.133.0.1"

Largest networks in Germany

AS3320 Deutsche Telekom AG36,175,616 IPv4 addressesAS31399 Mercedes-Benz Group AG16,805,888 IPv4 addressesAS3209 Vodafone GmbH15,881,984 IPv4 addressesAS6805 Telefonica Germany GmbH & Co.OHG8,351,488 IPv4 addressesAS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.7,913,472 IPv4 addressesAS24940 Hetzner Online GmbH3,237,120 IPv4 addresses