AS23291 Flagstar Bank

• IPv4 Prefixes

Country	Announced Prefix	Description	Valid ROA	Parent Prefix	RIR
	12.159.49.0/24	American Registry for Internet Numbers		12.0.0.0/8	ARIN
	12.162.250.0/24	American Registry for Internet Numbers		5.16.0.0/14	RIPE
	63.78.207.0/24	Flagstar Bank		63.64.0.0/10	ARIN
	63.85.49.0/24	Flagstar Bank		63.64.0.0/10	ARIN

• IPv4 Peers

Country	ASN	Name	Description
	AS701	UUNET	Verizon Business
	AS13335	CLOUDFLARENET	Cloudflare, Inc.
	AS7018	ATT-INTERNET4	AT&T Enterprises, LLC

• IPv4 Upstreams

Country	ASN	Name	Description
	AS13335	CLOUDFLARENET	Cloudflare, Inc.
	AS701	UUNET	Verizon Business
	AS7018	ATT-INTERNET4	AT&T Enterprises, LLC

IPv4 Upstream Graph

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IPv4 Upstream Graph

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#
# 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/
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# Copyright 1997-2025, American Registry for Internet Numbers, Ltd.
#


ASNumber:       23291
ASName:         FLAGSTAR-BANK-US
ASHandle:       AS23291
RegDate:        2002-02-21
Updated:        2012-02-24    
Ref:            https://rdap.arin.net/registry/autnum/23291


OrgName:        Flagstar Bank
OrgId:          FLAGST-6
Address:        5151 Corporate Drive
City:           Troy
StateProv:      MI
PostalCode:     48098
Country:        US
RegDate:        2002-02-21
Updated:        2011-09-24
Ref:            https://rdap.arin.net/registry/entity/FLAGST-6


OrgTechHandle: NETWO1296-ARIN
OrgTechName:   Network Services
OrgTechPhone:  +1-248-312-2445 
OrgTechEmail:  networkservices@flagstar.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO1296-ARIN

OrgAbuseHandle: NETWO1296-ARIN
OrgAbuseName:   Network Services
OrgAbusePhone:  +1-248-312-2445 
OrgAbuseEmail:  networkservices@flagstar.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO1296-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 1997-2025, American Registry for Internet Numbers, Ltd.
#