AS12187 Metropolitan Transportation Authority

MTAHQ1 - Metropolitan Transportation Authority · registered in the United States

IPv4 addresses20,99213 prefixes · <0.001% of announced IPv4

Rank in United States#2,083largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#5,978of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS12187 in ASN lookup Look up an IP in this network (170.28.16.1) All networks in United States

IPv4 prefixes

All 13 prefixes, in address order.

170.28.16.0/23
170.28.32.0/19
170.28.64.0/24
170.28.65.0/24
170.28.66.0/23
170.28.68.0/22
170.28.72.0/21
170.28.80.0/20
170.28.128.0/21
170.28.136.0/22
170.28.140.0/23
170.28.142.0/24
170.28.143.0/24

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AS6062#2086 NETPLEX - NETPLEX20,736

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