AS17276 SEI Investments

• IPv4 Prefixes

Country	Announced Prefix	Description	Valid ROA	Parent Prefix	RIR
	12.20.48.0/24	SEI CORPORATION		12.0.0.0/8	ARIN
	12.20.49.0/24	SEI CORPORATION		12.0.0.0/8	ARIN
	170.76.224.0/24	SEI Investments Developments, INC		170.76.224.0/23	ARIN
	170.76.225.0/24	SEI Investments Developments, INC		170.76.224.0/23	ARIN
	206.220.236.0/24	SEI Investments		206.220.236.0/22	ARIN
	206.220.237.0/24	SEI Investments		206.220.236.0/22	ARIN
	206.220.238.0/24	SEI Investments		206.220.236.0/22	ARIN
	206.220.239.0/24	SEI Investments		206.220.236.0/22	ARIN

• IPv4 Peers

Country	ASN	Name	Description
	AS7018	ATT-INTERNET4	AT&T Services, Inc.
	AS6461	ZAYO-6461	Zayo Bandwidth

• IPv4 Upstreams

Country	ASN	Name	Description
	AS6461	ZAYO-6461	Zayo Bandwidth
	AS7018	ATT-INTERNET4	AT&T Services, Inc.

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/
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# 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.
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ASNumber:       17276
ASName:         SEIC-CORP-1
ASHandle:       AS17276
RegDate:        2000-08-15
Updated:        2012-03-02    
Ref:            https://rdap.arin.net/registry/autnum/17276


OrgName:        SEI Investments
OrgId:          SEIINV-1
Address:        1 Freedom Valley Dr
City:           Oaks
StateProv:      PA
PostalCode:     19456
Country:        US
RegDate:        1998-10-08
Updated:        2011-09-24
Ref:            https://rdap.arin.net/registry/entity/SEIINV-1


OrgAbuseHandle: KS11-ARIN
OrgAbuseName:   Stueve, Kent 
OrgAbusePhone:  +1-610-254-5818 
OrgAbuseEmail:  kstueve@seic.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/KS11-ARIN

OrgTechHandle: KS11-ARIN
OrgTechName:   Stueve, Kent 
OrgTechPhone:  +1-610-254-5818 
OrgTechEmail:  kstueve@seic.com
OrgTechRef:    https://rdap.arin.net/registry/entity/KS11-ARIN

RTechHandle: JS504-ARIN
RTechName:   Stevenson, Joe 
RTechPhone:  +1-610-676-1406 
RTechEmail:  Jstevenson@seic.com
RTechRef:    https://rdap.arin.net/registry/entity/JS504-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.
#