AS19518 Rock Island Communications

ROCKISLAND - Rock Island Communications · registered in the United States

IPv4 addresses18,4324 prefixes · <0.001% of announced IPv4

Rank in United States#2,201largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#6,437of 79,396 networks with IPv4

IPv63 x /483 prefixes

CountryUnited States18,679 ASNs registered there

Open AS19518 in ASN lookup Look up an IP in this network (44.30.136.1) All networks in United States

IPv4 prefixes

All 4 prefixes, in address order.

44.30.136.0/21
63.249.0.0/19
64.119.0.0/20
207.32.160.0/20

IPv6 prefixes

All 3 prefixes.

2602:2e5:666::/48
2605:1500:aaaa::/48
2605:1500:fffe::/48

Other ASNs named Rock Island Communications

1 other network uses the same organisation name; together with AS19518 they announce 18,688 IPv4 addresses.

ASNNameIPv4 addresses

AS3742ROCKISLAND2 - Rock Island Communications US256

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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