AS40156 The Optimal Link Corporation

THEOPT-HOU - The Optimal Link Corporation · registered in the United States

IPv4 addresses11,00810 prefixes · <0.001% of announced IPv4

Rank in United States#2,829largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#8,648of 79,396 networks with IPv4

IPv61 x /32 (65,538 x /48)3 prefixes

CountryUnited States18,679 ASNs registered there

Open AS40156 in ASN lookup Look up an IP in this network (23.128.116.1) All networks in United States

IPv4 prefixes

All 10 prefixes, in address order.

23.128.116.0/24
23.189.208.0/24
38.252.8.0/24
66.187.64.0/20
139.64.155.0/24
142.249.221.0/24
162.218.228.0/22
193.202.106.0/24
195.8.117.0/24
216.230.224.0/20

IPv6 prefixes

All 3 prefixes.

2001:67c:1388::/48
2602:f7c4:1::/48
2604:e880::/32

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AS33509#2832 CASCADE-ACCESS-LLC-CA-ESTOR1 - Cascade Access, LLC11,008

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