AS21799 Metropolitan Water District of Southern California

MWDSC - Metropolitan Water District of Southern California · registered in the United States

IPv4 addresses1,7927 prefixes · <0.001% of announced IPv4

Rank in United States#6,647largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#25,105of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS21799 in ASN lookup Look up an IP in this network (144.166.53.1) All networks in United States

IPv4 prefixes

All 7 prefixes, in address order.

144.166.53.0/24
144.166.55.0/24
144.166.56.0/24
144.166.74.0/24
144.166.174.0/24
144.166.176.0/24
144.166.178.0/24

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AS21758#6646 MODINE-MANUFACTURING - Modine Manufacturing Company1,792

AS21869#6648 SUN-CHEMICAL - Sun Chemical Corporation1,792

AS21952#6649 NEILL-CORPORATION - Neill Corporation1,792

AS22002#6650 SYSTEMS-SOLUTIONS-OF-PADUCAH-INC - Systems Solutions of Paducah, Inc.1,792

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