Autonomous System
AS17529 STARCAT Co .,LTD.
ISPActiveJapanAPNIC
AS17529 (MediaCat) is an ISP network operated by STARCAT Co .,LTD. in Japan, registered with APNIC. It has 13 IPv4 prefixes with 135,424 addresses and 1 IPv6 prefix, which makes it the 1,757th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses135,424in 13 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#1,757of 82,200 active ASNs
Details
OrganizationSTARCAT Co .,LTD.
AS nameMediaCat
Websitestarcat.co.jp
Country Japan (JP)
Network typeISP
RegistryAPNIC
Abuse contacthostmaster@nic.ad.jp
Registered—
Last updated2025-12-12
IPv4 prefixes
13 prefixes · 135,424 addresses| Network | Addresses | First – last address |
|---|---|---|
| 180.200.0.0/17 | 32,768 | 180.200.0.0 – 180.200.127.255 |
| 58.146.0.0/18 | 16,384 | 58.146.0.0 – 58.146.63.255 |
| 120.138.128.0/18 | 16,384 | 120.138.128.0 – 120.138.191.255 |
| 124.241.128.0/18 | 16,384 | 124.241.128.0 – 124.241.191.255 |
| 125.58.64.0/18 | 16,384 | 125.58.64.0 – 125.58.127.255 |
| 58.146.64.0/19 | 8,192 | 58.146.64.0 – 58.146.95.255 |
| 193.115.32.0/19 | 8,192 | 193.115.32.0 – 193.115.63.255 |
| 203.91.160.0/19 | 8,192 | 203.91.160.0 – 203.91.191.255 |
| 61.211.128.0/20 | 4,096 | 61.211.128.0 – 61.211.143.255 |
| 211.128.16.0/20 | 4,096 | 211.128.16.0 – 211.128.31.255 |
| 61.213.192.0/21 | 2,048 | 61.213.192.0 – 61.213.199.255 |
| 61.213.200.0/21 | 2,048 | 61.213.200.0 – 61.213.207.255 |
| 219.100.227.0/24 | 256 | 219.100.227.0 – 219.100.227.255 |
180.200.0.0/17 58.146.0.0/18 120.138.128.0/18 124.241.128.0/18 125.58.64.0/18 58.146.64.0/19 193.115.32.0/19 203.91.160.0/19 61.211.128.0/20 211.128.16.0/20 61.213.192.0/21 61.213.200.0/21 219.100.227.0/24
IPv6 prefixes
1 prefix- 2001:3b0::/32
2001:3b0::/32
Query AS17529 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=AS17529&key=YOUR_API_KEY"Any address in its prefixes resolves to AS17529, with or without a key:
curl "https://api.ipapi.is/?q=180.200.0.1"Largest networks in Japan
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