AS15689 ASNUM-ORG-AISN1-RIPE Advanced IT Services Nottingham Ltd

ASNUM-ORG-AISN1-RIPE Advanced IT Services Nottingham Ltd · registered in the United Kingdom

IPv4 addresses2,0481 prefixes · <0.001% of announced IPv4

Rank in United Kingdom#695largest network in GB by IPv4 space, of 2,074 · <0.01% of GB

Rank worldwide#21,294of 79,396 networks with IPv4

IPv68 x /32 (524,288 x /48)1 prefixes

CountryUnited Kingdom2,261 ASNs registered there

Open AS15689 in ASN lookup Look up an IP in this network (46.18.48.1) All networks in United Kingdom

IPv4 prefixes

All 1 prefix, in address order.

46.18.48.0/21

IPv6 prefixes

All 1 prefix.

2a01:5980::/29

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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