AS27370 City of Boston

CITYOFBOSTON - City of Boston · registered in the United States

IPv4 addresses70,14432 prefixes · 0.002% of announced IPv4

Rank in United States#790largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#2,433of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS27370 in ASN lookup Look up an IP in this network (140.241.0.1) All networks in United States

IPv4 prefixes

All 32 prefixes, in address order.

140.241.0.0/22
140.241.4.0/22
140.241.8.0/22
140.241.12.0/23
140.241.14.0/24
140.241.15.0/24
140.241.16.0/21
140.241.24.0/23
140.241.26.0/23
140.241.28.0/22
140.241.32.0/19
140.241.64.0/20
140.241.80.0/22
140.241.84.0/23
140.241.86.0/24
140.241.87.0/24
140.241.88.0/21
140.241.96.0/19
140.241.128.0/18
140.241.192.0/19
140.241.224.0/20
140.241.240.0/22
140.241.244.0/24
140.241.245.0/24
140.241.246.0/23
140.241.248.0/23
140.241.250.0/24
140.241.251.0/24
140.241.252.0/22
192.80.65.0/24
204.167.88.0/24
216.163.208.0/20

Similar-sized networks in United States

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AS4195#789 SHAW - D. E. Shaw & Co. LP70,144

AS62618#791 MICHIGANTECH - Michigan Technological University70,144

AS6364#792 ATLANTIC-NET-1 - Atlantic.net, Inc.69,888

AS11123#793 UIA - Ultimate Internet Access, Inc69,632

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