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	Prefix	Description
	64.252.240.0/24	AT&T Enterprises, LLC
	64.252.241.0/24	AT&T Enterprises, LLC
	64.252.242.0/24	AT&T Enterprises, LLC
	64.252.243.0/24	AT&T Enterprises, LLC
	64.252.244.0/24	AT&T Enterprises, LLC
	64.252.245.0/24	AT&T Enterprises, LLC
	64.252.246.0/24	AT&T Enterprises, LLC
	64.252.247.0/24	AT&T Enterprises, LLC
	74.113.112.0/24	Yale-New Haven Health Services Corporation
	74.113.113.0/24	Yale-New Haven Health Services Corporation
	74.113.114.0/24	Yale-New Haven Health Services Corporation
	74.113.115.0/24	Yale-New Haven Health Services Corporation
	74.113.116.0/24	Yale-New Haven Health Services Corporation
	74.113.117.0/24	Yale-New Haven Health Services Corporation
	74.113.118.0/24	Yale-New Haven Health Services Corporation
	74.113.119.0/24	Yale-New Haven Health Services Corporation
	75.5.201.0/24	AT&T Enterprises, LLC
	192.131.129.0/24	YALE NEW HAVEN HOSPITAL
	192.152.148.0/24	YALE NEW HAVEN HOSPITAL
	192.152.149.0/24	YALE NEW HAVEN HOSPITAL
	192.152.150.0/24	YALE NEW HAVEN HOSPITAL
	204.60.50.0/24	AT&T Enterprises, LLC
	204.60.51.0/24	AT&T Enterprises, LLC
	204.60.184.0/24	AT&T Enterprises, LLC
	204.60.185.0/24	AT&T Enterprises, LLC
	204.60.186.0/24	AT&T Enterprises, LLC
	204.60.187.0/24	AT&T Enterprises, LLC
	204.90.81.0/24	Yale New Haven Hospital
	205.167.18.0/24	Yale New Haven Hospital
	205.167.19.0/24	Yale New Haven Hospital

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS7018	AT&T Enterprises, LLC	✔	✘
	AS46887	Zayo Bandwidth	✔	✘

---

Peers

	ASN	Description	IPv4	IPv6
	AS7018	AT&T Enterprises, LLC	✔	✘
	AS46887	Zayo Bandwidth	✔	✘

ASHandle:       AS20442
OrgID:          YHHSC-1
ASName:         YNHHSC
ASNumber:       20442
RegDate:        2007-09-10
Updated:        2012-03-02
TechHandle:     RBE133-ARIN
AbuseHandle:    NETWO1789-ARIN
NOCHandle:      NETWO1789-ARIN
Source:         ARIN



OrgID:          YHHSC-1
OrgName:        Yale-New Haven Health Services Corporation
CanAllocate:    
Street:         789 Howard Avenue
City:           New Haven
State/Prov:     CT
Country:        US
PostalCode:     06519
RegDate:        2007-06-26
Updated:        2026-05-21
OrgAdminHandle: RBE133-ARIN
OrgTechHandle:  BOYER163-ARIN
OrgTechHandle:  ELDRE3-ARIN
OrgTechHandle:  RBE133-ARIN
OrgTechHandle:  STONE463-ARIN
OrgAbuseHandle: NETWO1789-ARIN
OrgNOCHandle:   NETWO1789-ARIN
OrgRoutingHandle:   BOYER163-ARIN
OrgRoutingHandle:   RBE133-ARIN
OrgRoutingHandle:   STONE463-ARIN
OrgDNSHandle:   BOYER163-ARIN
OrgDNSHandle:   ELDRE3-ARIN
OrgDNSHandle:   RBE133-ARIN
OrgDNSHandle:   STONE463-ARIN
Source:         ARIN





OrgAdminHandle:       RBE133-ARIN
OrgAdminName:         Rajeev Bellare
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        BOYER163-ARIN
OrgTechName:          Mark Boyer
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        ELDRE3-ARIN
OrgTechName:          Don Eldred
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        RBE133-ARIN
OrgTechName:          Rajeev Bellare
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        STONE463-ARIN
OrgTechName:          Anthony Stone
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       NETWO1789-ARIN
OrgAbuseName:          Network Operations
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         NETWO1789-ARIN
OrgNOCName:            Network Operations
# Email removed, Log into bgp.tools to see whois emails


OrgRoutingHandle:     BOYER163-ARIN
OrgRoutingName:       Mark Boyer
# Email removed, Log into bgp.tools to see whois emails


OrgRoutingHandle:     RBE133-ARIN
OrgRoutingName:       Rajeev Bellare
# Email removed, Log into bgp.tools to see whois emails


OrgRoutingHandle:     STONE463-ARIN
OrgRoutingName:       Anthony Stone
# Email removed, Log into bgp.tools to see whois emails


OrgDNSHandle:         BOYER163-ARIN
OrgDNSName:           Mark Boyer
# Email removed, Log into bgp.tools to see whois emails


OrgDNSHandle:         ELDRE3-ARIN
OrgDNSName:           Don Eldred
# Email removed, Log into bgp.tools to see whois emails


OrgDNSHandle:         RBE133-ARIN
OrgDNSName:           Rajeev Bellare
# Email removed, Log into bgp.tools to see whois emails


OrgDNSHandle:         STONE463-ARIN
OrgDNSName:           Anthony Stone
# Email removed, Log into bgp.tools to see whois emails


TechHandle:           RBE133-ARIN
TechName:             Rajeev Bellare
# Email removed, Log into bgp.tools to see whois emails


AbuseHandle:          NETWO1789-ARIN
AbuseName:             Network Operations
# Email removed, Log into bgp.tools to see whois emails


NOCHandle:            NETWO1789-ARIN
NOCName:               Network Operations
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-06-16T03:25:40Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as16657:as-cust	487
RADB	as-ccf	1539
RADB	as-ccf-test	1461