AS55128 McFarlane Associates LLC

MCFASSOC - McFarlane Associates LLC · registered in the United States

IPv4 addresses5122 prefixes · <0.001% of announced IPv4

Rank in United States#10,282largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#47,810of 79,396 networks with IPv4

IPv616 x /484 prefixes

CountryUnited States18,679 ASNs registered there

Open AS55128 in ASN lookup Look up an IP in this network (23.136.128.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

23.136.128.0/24
192.67.166.0/24

IPv6 prefixes

All 4 prefixes.

2620:12d:5000::/47
2620:12d:5002::/47
2620:12d:5004::/46
2620:12d:5008::/45

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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