ASN AS17276 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS17276?

AS17276 is listed under SEI Investments.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS17276 SEI Investments | IPGeolocation.io

ASN Lookup Tool

SEI Investments seic.com

US 8 Routes

AS Data

AS17276

AS17276 – SEI Investments

AS Number	17276
AS Name	SEIC-CORP-1
Organization	SEI Investments(seiinv-1)
Country	US
Website	seic.com
Number of IPv4 Routes	8
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2000-08-15

ASN Intelligence API for production workflows

Use ASN data for AS17276 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
170.76.225.0/24	AS17276	SEI Investments	SEI Investments Developments, INC	256
206.220.236.0/24	AS17276	SEI Investments	SEI Investments	256
170.76.224.0/24	AS17276	SEI Investments	SEI Investments Developments, INC	256
12.20.49.0/24	AS17276	SEI Investments	SEI CORPORATION	256
12.20.48.0/24	AS17276	SEI Investments	SEI CORPORATION	256
206.220.239.0/24	AS17276	SEI Investments	SEI Investments	256
206.220.238.0/24	AS17276	SEI Investments	SEI Investments	256
206.220.237.0/24	AS17276	SEI Investments	SEI Investments	256

Raw Whois Response

#
# 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 1997-2026, American Registry for Internet Numbers, Ltd.
#


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


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

OrgAbuseHandle: KS11-ARIN
OrgAbuseName:   Stueve, Kent 
OrgAbusePhone:  +1-610-254-5818 
OrgAbuseEmail:  kstueve@seic.com
OrgAbuseRef:    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 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

Peers

AS Number	Description	Country
AS7018	AT&T Enterprises, LLC	US
AS6461	Zayo Bandwidth	US

Upstreams

AS Number	Description	Country
AS6461	Zayo Bandwidth	US