Autonomous System
AS12387 TON Total optical Networks AG
ISPActiveSwitzerlandRIPE
AS12387 (TON) is an ISP network operated by TON Total optical Networks AG in Switzerland, registered with RIPE. It has 4 IPv4 prefixes with 10,240 addresses and 1 IPv6 prefix, which makes it the 9,977th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses10,240in 4 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#9,977of 82,200 active ASNs
Details
OrganizationTON Total optical Networks AG
AS nameTON
Websiteton-net.com
Country Switzerland (CH)
Network typeISP
RegistryRIPE
Abuse contactabuse@ton-net.com
Registered1970-01-01
Last updated2026-07-31
IPv4 prefixes
4 prefixes · 10,240 addresses| Network | Addresses | First – last address |
|---|---|---|
| 77.237.192.0/19 | 8,192 | 77.237.192.0 – 77.237.223.255 |
| 195.4.176.0/22 | 1,024 | 195.4.176.0 – 195.4.179.255 |
| 77.237.206.0/23 | 512 | 77.237.206.0 – 77.237.207.255 |
| 77.237.208.0/23 | 512 | 77.237.208.0 – 77.237.209.255 |
77.237.192.0/19 195.4.176.0/22 77.237.206.0/23 77.237.208.0/23
IPv6 prefixes
1 prefix- 2a00:c10::/32
2a00:c10::/32
Query AS12387 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=AS12387&key=YOUR_API_KEY"Any address in its prefixes resolves to AS12387, with or without a key:
curl "https://api.ipapi.is/?q=77.237.192.1"Largest networks in Switzerland
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