AS31303 NIOC-AS National Iranian Oil Company

NIOC-AS National Iranian Oil Company · registered in Iran

IPv4 addresses4,0961 prefixes · <0.001% of announced IPv4

Rank in Iran#92largest network in IR by IPv4 space, of 569 · 0.04% of IR

Rank worldwide#15,954of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryIran583 ASNs registered there

Open AS31303 in ASN lookup Look up an IP in this network (217.174.16.1) All networks in Iran

IPv4 prefixes

All 1 prefix, in address order.

217.174.16.0/20

Similar-sized networks in Iran

ASNNameIPv4 addresses

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AS29079#91 IRNA-AS IRNA4,096

AS41620#93 IUSTCC-AS Iran University Of Science and Technology4,096

AS43510#94 MEHVARMACHINE-AS Mehvar Machine4,096

AS56765#95 SBU-AS Shahid Beheshti university4,096

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources