Autonomous System

AS3303 Swisscom (Schweiz) AG

ISPActiveSwitzerlandRIPE

AS3303 (SWISSCOM) is an ISP network operated by Swisscom (Schweiz) AG in Switzerland, registered with RIPE. It has 241 IPv4 prefixes with 3,520,512 addresses and 35 IPv6 prefixes, which makes it the 174th largest of 82,283 active autonomous systems by IPv4 space.

IPv4 addresses3,520,512in 241 prefixes
IPv6 prefixes35≈ 3.8 × 10³⁰ addresses
Size rank#174of 82,283 active ASNs
Abuser scoreVery Low0.03% of its addresses flagged · method

Details

OrganizationSwisscom (Schweiz) AG
AS nameSWISSCOM
Websiteswisscom.ch
Country Switzerland (CH)
Network typeISP
RegistryRIPE
Abuse contactabuse@ip-plus.net
Registered2002-09-19
Last updated2026-10-09

IPv4 prefixes

241 prefixes · 3,520,512 addresses
NetworkAddressesFirst – last address
85.0.0.0/13524,28885.0.0.0 – 85.7.255.255
178.192.0.0/13524,288178.192.0.0 – 178.199.255.255
83.76.0.0/14262,14483.76.0.0 – 83.79.255.255
92.104.0.0/14262,14492.104.0.0 – 92.107.255.255
188.60.0.0/14262,144188.60.0.0 – 188.63.255.255
62.202.0.0/15131,07262.202.0.0 – 62.203.255.255
81.62.0.0/15131,07281.62.0.0 – 81.63.255.255
217.192.0.0/15131,072217.192.0.0 – 217.193.255.255
46.14.0.0/1665,53646.14.0.0 – 46.14.255.255
138.188.0.0/1665,536138.188.0.0 – 138.188.255.255
138.190.0.0/1665,536138.190.0.0 – 138.190.255.255
138.223.0.0/1665,536138.223.0.0 – 138.223.255.255
146.4.0.0/1665,536146.4.0.0 – 146.4.255.255
162.21.0.0/1665,536162.21.0.0 – 162.21.255.255
176.127.0.0/1665,536176.127.0.0 – 176.127.255.255
194.209.0.0/1665,536194.209.0.0 – 194.209.255.255
195.65.0.0/1665,536195.65.0.0 – 195.65.255.255
195.186.0.0/1665,536195.186.0.0 – 195.186.255.255
212.243.0.0/1665,536212.243.0.0 – 212.243.255.255
213.3.0.0/1665,536213.3.0.0 – 213.3.255.255
109.164.128.0/1732,768109.164.128.0 – 109.164.255.255
170.17.128.0/1732,768170.17.128.0 – 170.17.255.255
83.173.192.0/1816,38483.173.192.0 – 83.173.255.255
84.253.0.0/1816,38484.253.0.0 – 84.253.63.255
95.152.64.0/1816,38495.152.64.0 – 95.152.127.255
The 25 largest of 241. The API and the database have all of them.

IPv6 prefixes

35 prefixes
  • 2a02:1200::/27
  • 2a02:21b0::/29
  • 2001:918::/32
  • 2001:91a::/32
  • 2001:91f::/32
  • 2a01:8b00::/32
  • 2a01:a2e0::/32
  • 2a02:a90::/32
  • 2a02:4620::/32
  • 2001:4d98::/33
  • 2a06:d581:3000::/36
  • 2a07:2902:400::/38
  • 2001:678:e0::/48
  • 2001:678:d98::/48
  • 2001:678:d9c::/48
  • 2001:67c:420::/48
  • 2001:67c:4f0::/48
  • 2001:67c:5dc::/48
  • 2001:67c:ff0::/48
  • 2001:67c:1984::/48
  • 2001:67c:273c::/48
  • 2001:67c:2950::/48
  • 2001:67c:2f70::/48
  • 2001:918:ff44::/48
  • 2001:918:ff64::/48
The 25 largest of 35. The API and the database have all of them.

Query AS3303 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=AS3303&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS3303, with or without a key:

curl "https://api.ipapi.is/?q=85.0.0.1"

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