Autonomous System

AS25306 IsIran

ISPActiveIranRIPE

AS25306 (INSTITUTE-ISIRAN) is an ISP network operated by IsIran in Iran, registered with RIPE. It has 43 IPv4 prefixes with 22,784 addresses, which makes it the 6,356th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses22,784in 43 prefixes
IPv6 prefixes0none
Size rank#6,356of 82,200 active ASNs
Abuser scoreVery Low0.04% of its addresses flagged · method

Details

OrganizationIsIran
AS nameINSTITUTE-ISIRAN
Websiteisiran-net.com
Country Iran (IR)
Network typeISP
RegistryRIPE
Abuse contactabuse@behestanrh.net
Registered2002-09-26
Last updated2026-06-02

IPv4 prefixes

43 prefixes · 22,784 addresses
NetworkAddressesFirst – last address
81.28.32.0/198,19281.28.32.0 – 81.28.63.255
81.28.32.0/2351281.28.32.0 – 81.28.33.255
81.28.34.0/2351281.28.34.0 – 81.28.35.255
81.28.36.0/2351281.28.36.0 – 81.28.37.255
81.28.38.0/2351281.28.38.0 – 81.28.39.255
81.28.40.0/2351281.28.40.0 – 81.28.41.255
81.28.42.0/2351281.28.42.0 – 81.28.43.255
81.28.44.0/2351281.28.44.0 – 81.28.45.255
81.28.46.0/2351281.28.46.0 – 81.28.47.255
81.28.48.0/2351281.28.48.0 – 81.28.49.255
81.28.50.0/2351281.28.50.0 – 81.28.51.255
81.28.52.0/2351281.28.52.0 – 81.28.53.255
81.28.54.0/2351281.28.54.0 – 81.28.55.255
81.28.56.0/2351281.28.56.0 – 81.28.57.255
81.28.58.0/2351281.28.58.0 – 81.28.59.255
81.28.60.0/2351281.28.60.0 – 81.28.61.255
81.28.32.0/2425681.28.32.0 – 81.28.32.255
81.28.33.0/2425681.28.33.0 – 81.28.33.255
81.28.34.0/2425681.28.34.0 – 81.28.34.255
81.28.35.0/2425681.28.35.0 – 81.28.35.255
81.28.36.0/2425681.28.36.0 – 81.28.36.255
81.28.37.0/2425681.28.37.0 – 81.28.37.255
81.28.38.0/2425681.28.38.0 – 81.28.38.255
81.28.39.0/2425681.28.39.0 – 81.28.39.255
81.28.40.0/2425681.28.40.0 – 81.28.40.255
The 25 largest of 43. The API and the database have all of them.

IPv6 prefixes

No IPv6 prefixes.

Query AS25306 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=AS25306&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS25306, with or without a key:

curl "https://api.ipapi.is/?q=81.28.32.1"

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