Autonomous System
AS43503 synaforce GmbH
HostingActiveGermanyRIPE
AS43503 (HERBST-AS) is a hosting network operated by synaforce GmbH in Germany, registered with RIPE. It has 6 IPv4 prefixes with 13,312 addresses, which makes it the 8,748th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses13,312in 6 prefixes
IPv6 prefixes0none
Size rank#8,748of 82,200 active ASNs
Details
Organizationsynaforce GmbH
AS nameHERBST-AS
Websitesynaforce.com
Country Germany (DE)
Network typeHosting
RegistryRIPE
Abuse contactnoc@hartl-group.de
Registered2007-08-13
Last updated2026-09-24
IPv4 prefixes
6 prefixes · 13,312 addresses| Network | Addresses | First – last address |
|---|---|---|
| 81.16.48.0/20 | 4,096 | 81.16.48.0 – 81.16.63.255 |
| 46.30.80.0/21 | 2,048 | 46.30.80.0 – 46.30.87.255 |
| 46.226.112.0/21 | 2,048 | 46.226.112.0 – 46.226.119.255 |
| 83.137.96.0/21 | 2,048 | 83.137.96.0 – 83.137.103.255 |
| 109.234.120.0/21 | 2,048 | 109.234.120.0 – 109.234.127.255 |
| 91.203.200.0/22 | 1,024 | 91.203.200.0 – 91.203.203.255 |
81.16.48.0/20 46.30.80.0/21 46.226.112.0/21 83.137.96.0/21 109.234.120.0/21 91.203.200.0/22
IPv6 prefixes
No IPv6 prefixes.
Query AS43503 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=AS43503&key=YOUR_API_KEY"Any address in its prefixes resolves to AS43503, with or without a key:
curl "https://api.ipapi.is/?q=81.16.48.1"Largest networks in Germany
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