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	Prefix	Description
	140.241.0.0/16	City of Boston
	140.241.3.0/24	City of Boston
	140.241.14.0/24	City of Boston
	140.241.25.0/24	City of Boston
	140.241.86.0/24	City of Boston
	140.241.244.0/24	City of Boston
	140.241.250.0/24	City of Boston
	192.80.65.0/24	Boston Public Library
	204.167.88.0/24	Boston Public Library
	216.163.208.0/20	Boston Public Schools
	216.163.208.0/21	Boston Public Schools
	216.163.216.0/22	Boston Public Schools
	216.163.216.0/21	Boston Public Schools
	216.163.220.0/22	Boston Public Schools

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS27552	TowardEX Technologies International, Inc.	✔	✘
	AS54004	Cablevision Lightpath LLC	✔	✘
	AS46887	Crown Castle Fiber LLC	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS54004	Cablevision Lightpath LLC	✔	✘
	AS27552	TowardEX Technologies International, Inc.	✔	✘
	AS46887	Crown Castle Fiber LLC	✔	✘
	AS6939	Hurricane Electric LLC	✔	✘
	AS1828	Unitas Global	✔	✘
	AS54613	Converted Networks LLC	✔	✘
	AS2734	CoreSite	✔	✘
	AS1351	University of Vermont	✔	✘
	AS293	ESnet	✔	✘

ASHandle:       AS27370
OrgID:          CITYOF-198
ASName:         CITYOFBOSTON
ASNumber:       27370
RegDate:        2003-02-21
Updated:        2024-05-03
TechHandle:     NOC11232-ARIN
AbuseHandle:    NOC11232-ARIN
NOCHandle:      NOC11232-ARIN
Source:         ARIN



OrgID:          CITYOF-198
OrgName:        City of Boston
CanAllocate:    
Street:         1 CITY HALL SQ, RM 703
City:           BOSTON
State/Prov:     MA
Country:        US
PostalCode:     02201
Comment:        http://www.boston.gov/
RegDate:        1999-07-20
Updated:        2024-05-03
OrgAdminHandle: NOC11232-ARIN
OrgTechHandle:  HOSTM1518-ARIN
OrgTechHandle:  NOC11232-ARIN
OrgAbuseHandle: NOC11232-ARIN
OrgNOCHandle:   NOC11232-ARIN
OrgRoutingHandle:   NOC11232-ARIN
OrgDNSHandle:   HOSTM1518-ARIN
Source:         ARIN





OrgAdminHandle:       NOC11232-ARIN
OrgAdminName:          NOC
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        HOSTM1518-ARIN
OrgTechName:           Hostmaster
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        NOC11232-ARIN
OrgTechName:           NOC
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       NOC11232-ARIN
OrgAbuseName:          NOC
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         NOC11232-ARIN
OrgNOCName:            NOC
# Email removed, Log into bgp.tools to see whois emails


OrgRoutingHandle:     NOC11232-ARIN
OrgRoutingName:        NOC
# Email removed, Log into bgp.tools to see whois emails


OrgDNSHandle:         HOSTM1518-ARIN
OrgDNSName:            Hostmaster
# Email removed, Log into bgp.tools to see whois emails


TechHandle:           NOC11232-ARIN
TechName:              NOC
# Email removed, Log into bgp.tools to see whois emails


AbuseHandle:          NOC11232-ARIN
AbuseName:             NOC
# Email removed, Log into bgp.tools to see whois emails


NOCHandle:            NOC11232-ARIN
NOCName:               NOC
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-02-09T03:27:46Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-hurricane	24469
ARIN	as6128:as-customers	775
LEVEL3	as-towardex	369
RIPE	as-bonet-transit	2
RADB	as54004:as-customers	14
ALTDB	as-bonet-transit	2
RADB	as-ccf	1506
RADB	as-ccf-test	1461
RADB	as174:as-cogc-017	49