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	Prefix	Description
	50.227.99.0/24	Comcast Cable Communications, LLC
	148.59.37.0/24	Stack41, llc.
	148.59.133.0/24	Stack41, llc.
	161.38.16.0/24	Stack41, llc.
	161.38.16.0/22	Stack41, llc.
	161.38.17.0/24	Stack41, llc.
	161.38.18.0/24	Stack41, llc.
	161.38.19.0/24	Stack41, llc.
	162.223.125.0/24	ISC INTERNATIONAL, LTD.
	207.166.139.0/24	Data Holdings
	2604:2240::/32	Stack41, llc.

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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)	✔	✔
	AS11796	Airstream Communications, LLC	✔	✔
	AS13367	Comcast Cable Communications, LLC	✔	✘
	AS40264	Charter Communications LLC	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS3356	Lumen (Level 3)	✔	✔
	AS40264	Charter Communications LLC	✔	✘
	AS11796	Airstream Communications, LLC	✔	✔
	AS394032	Capital Data Inc	✔	✘
	AS26007	Swick Technologies, LLC	✔	✘
	AS13367	Comcast Cable Communications, LLC	✔	✘

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Downstreams

	ASN	Description	IPv4	IPv6
	AS394032	Capital Data Inc	✔	✘
	AS26007	Swick Technologies, LLC	✔	✘

ASHandle:       AS394621
OrgID:          SL-747
ASName:         DATAHOLDINGS-414-USA
ASNumber:       394621
RegDate:        2015-10-30
Comment:        www.dataholdings.com
Updated:        2022-09-26
Source:         ARIN



OrgID:          SL-747
OrgName:        Stack41, llc.
CanAllocate:    
Street:         3135 W Highland Blvd
City:           Milwaukee
State/Prov:     WI
Country:        US
PostalCode:     53208
Comment:        Now Data Holdings, LLC
RegDate:        2015-10-23
Updated:        2024-11-25
OrgAdminHandle: BROOK263-ARIN
OrgTechHandle:  BROOK263-ARIN
OrgAbuseHandle: BROOK263-ARIN
OrgNOCHandle:   BROOK263-ARIN
Source:         ARIN





OrgAdminHandle:       BROOK263-ARIN
OrgAdminName:         Ryan Brooks
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        BROOK263-ARIN
OrgTechName:          Ryan Brooks
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       BROOK263-ARIN
OrgAbuseName:         Ryan Brooks
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         BROOK263-ARIN
OrgNOCName:           Ryan Brooks
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-02-09T03:26:49Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
LEVEL3	as-lumen-customers-asns	10695
RIPE	as-transroute-spec	19663
RADB	as11796:as-customers	159
RADB	as-hurricane	24469
RADB	as-comcast-edia	2746
RADB	as-rr-biz	2094
ARIN	as11796:as-customers-arin	155