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	Prefix	Description
	12.172.67.0/24	Fresenius Medical Care
	67.132.8.0/24	FRESENIUS MEDICAL CARE
	72.166.43.0/24	FRESENIUS MEDICAL CARE
	144.121.61.0/24	Fresenius Medical Care NA
	199.38.52.0/24	FRESENIUS MEDICAL CARE HOLDINGS, INC
	199.38.52.0/22	FRESENIUS MEDICAL CARE HOLDINGS, INC

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS3356	Lumen (Level 3)	✔	✘
	AS7018	AT&T Enterprises, LLC	✔	✘
	AS13335	Cloudflare, Inc.	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS13335	Cloudflare, Inc.	✔	✘
	AS3356	Lumen (Level 3)	✔	✘
	AS7018	AT&T Enterprises, LLC	✔	✘

ASHandle:       AS27015
OrgID:          FMCH-4
ASName:         FMCH-27015
ASNumber:       27015
RegDate:        2015-07-29
Updated:        2015-07-29
Source:         ARIN



OrgID:          FMCH-4
OrgName:        FRESENIUS MEDICAL CARE HOLDINGS, INC
CanAllocate:    
Street:         32 Hartwell Ave
City:           Lexington
State/Prov:     MA
Country:        US
PostalCode:     02421
Comment:        http://www.freseniusmedicalcare.us
RegDate:        2015-07-13
Updated:        2015-07-13
OrgAdminHandle: NETWO2864-ARIN
OrgTechHandle:  NETWO2864-ARIN
OrgAbuseHandle: NETWO2864-ARIN
OrgNOCHandle:   NETWO2864-ARIN
Source:         ARIN





OrgAdminHandle:       NETWO2864-ARIN
OrgAdminName:          Network Operations
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        NETWO2864-ARIN
OrgTechName:           Network Operations
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       NETWO2864-ARIN
OrgAbuseName:          Network Operations
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         NETWO2864-ARIN
OrgNOCName:            Network Operations
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-06-14T03:25:13Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
LEVEL3	as-lumen-customers-asns	10695
RADB	as-ccf	1539
ARIN	as13335:as-customers	1601
RADB	as-telstra-intl-customers	12432
ARIN	as-light-141	113
RADB	as-ccf-test	1461
ARIN	as-xo-b	59972
ARIN	as-xo	1
LEVEL3	as-as209-cust	1818
RADB	as-comcast-edia	2774