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AS3303

AS3303 is Swisscom’s network.

Last updated 3 Nov 2026 from DB-IP ASN Lite (2026-11-01) and RIR statistics (4 Nov 2026)

Short answer

AS3303 belongs to Swisscom (Schweiz) AG. DB-IP Lite attributes 3,493,120 IPv4 addresses in 246 ranges and 31 IPv6 ranges to it, all or nearly all of the IPv4 space in Switzerland. The number is registered with RIPE NCC in Switzerland on 28 Oct 1994.

Facts for AS3303
Operator (DB-IP)Swisscom (Schweiz) AG
KindHome broadband (curated)
IPv4 addresses3,493,120
IPv4 ranges246
IPv6 ranges31
RegistryRIPE NCC
Registered28 Oct 1994
Registry countrySwitzerland (CH)

Does it publish a geofeed?

Not for the range we sampled (85.0.0.0 – 85.7.255.255): its registry record, and the record above it, link no RFC 8805 geofeed (checked 2 Nov 2026). Without one, location databases have to estimate where these addresses are used, which is a common reason customers of Swisscom see the wrong city. Customers can ask Swisscom to publish one; the evidence report drafts that request.

Shared addresses (CGNAT)

Swisscom hasn’t been documented as using carrier-grade NAT in a source we could check. To see whether your own connection is behind it, compare your router’s address on the CGNAT check.

IPv6

DB-IP lists 31 IPv6 ranges for AS3303, so customers can get IPv6 addresses, which databases place separately from IPv4.

Where its IPv4 space is used, according to DB-IP

CH100%
DE0.02%

Share of the network’s IPv4 addresses by DB-IP Country Lite. IP Geolocation by DB-IP.

IP ranges

RangeAs CIDRAddresses
46.14.0.0 – 46.14.255.25546.14.0.0/1665,536
46.245.144.0 – 46.245.151.25546.245.144.0/212,048
62.202.0.0 – 62.202.151.25562.202.0.0/17, 62.202.128.0/20 …38,912
62.202.172.0 – 62.202.174.25562.202.172.0/23, 62.202.174.0/24768
62.202.176.0 – 62.202.200.25562.202.176.0/20, 62.202.192.0/21 …6,400
62.202.202.0 – 62.202.202.25562.202.202.0/24256
62.202.204.0 – 62.203.255.25562.202.204.0/22, 62.202.208.0/20 …78,848
78.110.128.0 – 78.110.143.25578.110.128.0/204,096
80.75.192.0 – 80.75.207.25580.75.192.0/204,096
80.94.144.0 – 80.94.159.25580.94.144.0/204,096
81.62.0.0 – 81.63.255.25581.62.0.0/15131,072
83.76.0.0 – 83.79.255.25583.76.0.0/14262,144
83.173.192.0 – 83.173.255.25583.173.192.0/1816,384
84.253.0.0 – 84.253.63.25584.253.0.0/1816,384
85.0.0.0 – 85.7.255.25585.0.0.0/13524,288
91.198.58.0 – 91.198.58.25591.198.58.0/24256
91.198.72.0 – 91.198.72.25591.198.72.0/24256
91.206.11.0 – 91.206.11.25591.206.11.0/24256
91.209.158.0 – 91.209.158.25591.209.158.0/24256
91.212.91.0 – 91.212.91.25591.212.91.0/24256
91.212.117.0 – 91.212.117.25591.212.117.0/24256
91.216.229.0 – 91.216.229.25591.216.229.0/24256
91.220.40.0 – 91.220.40.25591.220.40.0/24256
91.223.121.0 – 91.223.121.25591.223.121.0/24256
91.223.154.0 – 91.223.154.25591.223.154.0/24256
91.226.202.0 – 91.226.202.25591.226.202.0/24256
91.230.249.0 – 91.230.249.25591.230.249.0/24256
92.104.0.0 – 92.107.255.25592.104.0.0/14262,144
95.152.64.0 – 95.152.127.25595.152.64.0/1816,384
109.164.128.0 – 109.164.255.255109.164.128.0/1732,768
136.238.2.0 – 136.238.3.255136.238.2.0/23512
136.238.12.0 – 136.238.14.255136.238.12.0/23, 136.238.14.0/24768
138.81.0.0 – 138.81.63.255138.81.0.0/1816,384
138.81.128.0 – 138.81.191.255138.81.128.0/1816,384
138.187.128.0 – 138.187.191.255138.187.128.0/1816,384
138.188.0.0 – 138.188.173.255138.188.0.0/17, 138.188.128.0/19 …44,544
138.188.176.0 – 138.188.255.255138.188.176.0/20, 138.188.192.0/1820,480
138.190.0.0 – 138.190.255.255138.190.0.0/1665,536
138.223.0.0 – 138.223.255.255138.223.0.0/1665,536
144.2.64.0 – 144.2.127.255144.2.64.0/1816,384
146.4.0.0 – 146.4.255.255146.4.0.0/1665,536
149.133.4.0 – 149.133.5.255149.133.4.0/23512
152.89.80.0 – 152.89.83.255152.89.80.0/221,024
156.135.8.0 – 156.135.11.255156.135.8.0/221,024
156.135.24.0 – 156.135.27.255156.135.24.0/221,024
160.63.24.0 – 160.63.27.255160.63.24.0/221,024
160.63.80.0 – 160.63.87.255160.63.80.0/212,048
160.63.200.0 – 160.63.207.255160.63.200.0/212,048
161.78.0.0 – 161.78.15.255161.78.0.0/204,096
162.21.0.0 – 162.21.255.255162.21.0.0/1665,536
2001:678:e0:: – 2001:678:e0:ffff:ffff:ffff:ffff:ffff2001:678:e0::/48IPv6
2001:678:d98:: – 2001:678:d98:ffff:ffff:ffff:ffff:ffff2001:678:d98::/48IPv6
2001:678:d9c:: – 2001:678:d9c:ffff:ffff:ffff:ffff:ffff2001:678:d9c::/48IPv6
2001:67c:420:: – 2001:67c:420:ffff:ffff:ffff:ffff:ffff2001:67c:420::/48IPv6
2001:67c:4f0:: – 2001:67c:4f0:ffff:ffff:ffff:ffff:ffff2001:67c:4f0::/48IPv6
2001:67c:5dc:: – 2001:67c:5dc:ffff:ffff:ffff:ffff:ffff2001:67c:5dc::/48IPv6
2001:67c:ff0:: – 2001:67c:ff0:ffff:ffff:ffff:ffff:ffff2001:67c:ff0::/48IPv6
2001:67c:1984:: – 2001:67c:1984:ffff:ffff:ffff:ffff:ffff2001:67c:1984::/48IPv6
2001:67c:273c:: – 2001:67c:273c:ffff:ffff:ffff:ffff:ffff2001:67c:273c::/48IPv6
2001:67c:2950:: – 2001:67c:2950:ffff:ffff:ffff:ffff:ffff2001:67c:2950::/48IPv6
2001:67c:2f70:: – 2001:67c:2f70:ffff:ffff:ffff:ffff:ffff2001:67c:2f70::/48IPv6
2001:918:: – 2001:918:eff:ffff:ffff:ffff:ffff:ffff2001:918::/37IPv6
2001:918:1000:: – 2001:918:ff15:ffff:ffff:ffff:ffff:ffff2001:918:1000::/36IPv6
2001:918:ff17:: – 2001:918:ff21:ffff:ffff:ffff:ffff:ffff2001:918:ff17::/48IPv6
2001:918:ff23:: – 2001:918:ff3d:ffff:ffff:ffff:ffff:ffff2001:918:ff23::/48IPv6
2001:918:ff3f:: – 2001:918:ff5c:ffff:ffff:ffff:ffff:ffff2001:918:ff3f::/48IPv6
2001:918:ff5e:: – 2001:918:ffb6:ffff:ffff:ffff:ffff:ffff2001:918:ff5e::/47IPv6
2001:918:ffb8:: – 2001:918:fff1:ffff:ffff:ffff:ffff:ffff2001:918:ffb8::/45IPv6
2001:918:fff3:: – 2001:918:ffff:ffff:ffff:ffff:ffff:ffff2001:918:fff3::/48IPv6
2001:91a:1:: – 2001:91a:2:ffff:ffff:ffff:ffff:ffff2001:91a:1::/48IPv6
Showing 50 of 246 IPv4 and 20 of 31 IPv6 ranges All ranges (CSV)

IP Geolocation by DB-IP, ASN Lite, CC BY 4.0.

Using an address from this network? See which sources agree on where it is.

Sources

  1. DB-IP IP to ASN Lite (CC BY 4.0) · checked 3 Nov 2026
  2. NRO RIR delegated-extended statistics · checked 5 Nov 2026