ASN AS27370 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS27370?

AS27370 is listed under City of Boston.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

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AS27370 City of Boston | IPGeolocation.io

ASN Lookup Tool

City of Boston cityofboston.gov

US 14 Routes

AS Data

AS27370

AS27370 – City of Boston

AS Number	27370
AS Name	CITYOFBOSTON
Organization	City of Boston(cityof-198)
Country	US
Website	cityofboston.gov
Number of IPv4 Routes	14
Number of IPv6 Routes	0
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	2003-02-21

ASN Intelligence API for production workflows

Use ASN data for AS27370 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
140.241.244.0/24	AS27370	City of Boston	City of Boston	256
216.163.208.0/20	AS27370	City of Boston	Boston Public Schools	4096
216.163.220.0/22	AS27370	City of Boston	Boston Public Schools	1024
140.241.25.0/24	AS27370	City of Boston	City of Boston	256
140.241.3.0/24	AS27370	City of Boston	City of Boston	256
216.163.208.0/21	AS27370	City of Boston	Boston Public Schools	2048
216.163.216.0/22	AS27370	City of Boston	Boston Public Schools	1024
192.80.65.0/24	AS27370	City of Boston	Boston Public Library	256
216.163.216.0/21	AS27370	City of Boston	Boston Public Schools	2048
140.241.14.0/24	AS27370	City of Boston	City of Boston	256

Raw Whois Response

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       27370
ASName:         CITYOFBOSTON
ASHandle:       AS27370
RegDate:        2003-02-21
Updated:        2024-05-03    
Ref:            https://rdap.arin.net/registry/autnum/27370


OrgName:        City of Boston
OrgId:          CITYOF-198
Address:        1 CITY HALL SQ, RM 703
City:           BOSTON
StateProv:      MA
PostalCode:     02201
Country:        US
RegDate:        1999-07-20
Updated:        2024-05-03
Comment:        http://www.boston.gov/
Ref:            https://rdap.arin.net/registry/entity/CITYOF-198


OrgTechHandle: NOC11232-ARIN
OrgTechName:   NOC
OrgTechPhone:  +1-617-635-2342 
OrgTechEmail:  brett.haynes@boston.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/NOC11232-ARIN

OrgNOCHandle: NOC11232-ARIN
OrgNOCName:   NOC
OrgNOCPhone:  +1-617-635-2342 
OrgNOCEmail:  brett.haynes@boston.gov
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC11232-ARIN

OrgAbuseHandle: NOC11232-ARIN
OrgAbuseName:   NOC
OrgAbusePhone:  +1-617-635-2342 
OrgAbuseEmail:  brett.haynes@boston.gov
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NOC11232-ARIN

OrgDNSHandle: HOSTM1518-ARIN
OrgDNSName:   Hostmaster
OrgDNSPhone:  +1-617-635-3594 
OrgDNSEmail:  hostmaster@cityofboston.gov
OrgDNSRef:    https://rdap.arin.net/registry/entity/HOSTM1518-ARIN

OrgRoutingHandle: NOC11232-ARIN
OrgRoutingName:   NOC
OrgRoutingPhone:  +1-617-635-2342 
OrgRoutingEmail:  brett.haynes@boston.gov
OrgRoutingRef:    https://rdap.arin.net/registry/entity/NOC11232-ARIN

OrgTechHandle: HOSTM1518-ARIN
OrgTechName:   Hostmaster
OrgTechPhone:  +1-617-635-3594 
OrgTechEmail:  hostmaster@cityofboston.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/HOSTM1518-ARIN

RAbuseHandle: NOC11232-ARIN
RAbuseName:   NOC
RAbusePhone:  +1-617-635-2342 
RAbuseEmail:  brett.haynes@boston.gov
RAbuseRef:    https://rdap.arin.net/registry/entity/NOC11232-ARIN

RTechHandle: NOC11232-ARIN
RTechName:   NOC
RTechPhone:  +1-617-635-2342 
RTechEmail:  brett.haynes@boston.gov
RTechRef:    https://rdap.arin.net/registry/entity/NOC11232-ARIN

RNOCHandle: NOC11232-ARIN
RNOCName:   NOC
RNOCPhone:  +1-617-635-2342 
RNOCEmail:  brett.haynes@boston.gov
RNOCRef:    https://rdap.arin.net/registry/entity/NOC11232-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

Peers

AS Number	Description	Country
AS2734	CoreSite	US
AS46887	Crown Castle Fiber LLC	US
AS293	ESnet	US
AS1351	University of Vermont	US
AS6939	Hurricane Electric LLC	US
AS1828	Unitas Global	US
AS54611	Intelligent Technology Solutions, Inc.	US
AS54004	Cablevision Lightpath LLC	US
AS27552	TowardEX Technologies International, Inc.	US

Upstreams

AS Number	Description	Country
AS46887	Crown Castle Fiber LLC	US
AS6939	Hurricane Electric LLC	US
AS54004	Cablevision Lightpath LLC	US
AS27552	TowardEX Technologies International, Inc.	US