AS39730 EIRCOM-UK Eircom (UK) Ltd

EIRCOM-UK Eircom (UK) Ltd · registered in the United Kingdom

IPv4 addresses3,0722 prefixes · <0.001% of announced IPv4

Rank in United Kingdom#575largest network in GB by IPv4 space, of 2,074 · <0.01% of GB

Rank worldwide#17,904of 79,396 networks with IPv4

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

CountryUnited Kingdom2,261 ASNs registered there

Open AS39730 in ASN lookup Look up an IP in this network (178.250.176.1) All networks in United Kingdom

IPv4 prefixes

All 2 prefixes, in address order.

178.250.176.0/21
185.195.132.0/22

IPv6 prefixes

All 1 prefix.

2a0a:23c0::/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