ASN Lookup Tool
AS27370 CITYOFBOSTON

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS27370
Organisation
City of Boston
Name
CITYOFBOSTON
Total IPv4 Addresses
70,144
Total IPv4 Prefixes
37
Total IPv6 Prefixes
0
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#2,476 out of 77,684
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
2003-02-21
Registration Last Change
2024-05-03
Receiving From

The list of active Autonomous Systems (ASs) which send traffic to that ASN.

ASN
Organisation
US flagESnet
US flagCrown Castle Fiber LLC
US flagHurricane Electric LLC
US flagOptimum WiFi
US flagUniversity of Vermont
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IPv4 Active Prefixes

This provides the list of IPv4 address space routes/prefixes currently announced on Border Gateway Protocol (BGP).

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Autonomous System (AS) is a network (or collection of networks) that are all managed and supervised by a single entity or organisation. This tool provides a comprehensive ownership and connectivity report for any given AS number.