Autonomous System
AS210712 ISP Alliance a.s.
ISPActiveCzechiaRIPE
AS210712 (GRAPESC-ISP) is an ISP network operated by ISP Alliance a.s. in Czechia, registered with RIPE. It has 7 IPv4 prefixes with 14,336 addresses and 1 IPv6 prefix, which makes it the 8,471st largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses14,336in 7 prefixes
IPv6 prefixes1≈ 3.2 × 10²⁹ addresses
Size rank#8,471of 82,200 active ASNs
Details
OrganizationISP Alliance a.s.
AS nameGRAPESC-ISP
Websiteispalliance.cz
Country Czechia (CZ)
Network typeISP
RegistryRIPE
Abuse contactabuse@ispalliance.cz
Registered2021-09-24
Last updated2025-09-01
IPv4 prefixes
7 prefixes · 14,336 addresses| Network | Addresses | First – last address |
|---|---|---|
| 93.91.144.0/20 | 4,096 | 93.91.144.0 – 93.91.159.255 |
| 217.75.208.0/20 | 4,096 | 217.75.208.0 – 217.75.223.255 |
| 109.235.0.0/21 | 2,048 | 109.235.0.0 – 109.235.7.255 |
| 91.192.32.0/22 | 1,024 | 91.192.32.0 – 91.192.35.255 |
| 185.40.80.0/22 | 1,024 | 185.40.80.0 – 185.40.83.255 |
| 185.94.4.0/22 | 1,024 | 185.94.4.0 – 185.94.7.255 |
| 213.109.172.0/22 | 1,024 | 213.109.172.0 – 213.109.175.255 |
93.91.144.0/20 217.75.208.0/20 109.235.0.0/21 91.192.32.0/22 185.40.80.0/22 185.94.4.0/22 213.109.172.0/22
IPv6 prefixes
1 prefix- 2a02:17a0::/30
2a02:17a0::/30
Query AS210712 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=AS210712&key=YOUR_API_KEY"Any address in its prefixes resolves to AS210712, with or without a key:
curl "https://api.ipapi.is/?q=93.91.144.1"Largest networks in Czechia
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