ASN AS18670 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS18670?

AS18670 is listed under Arrowstreet Capital, L.P..

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.

AS18670 Arrowstreet Capital, L.P.

ASN Lookup Tool

Arrowstreet Capital, L.P. arrowstreetcapital.com

US 2 Routes

AS Data

AS18670

AS18670 – Arrowstreet Capital, L.P.

AS Number	18670
AS Name	ARROWSTREET
Organization	Arrowstreet Capital, L.P.(acl-189)
Country	US
Website	arrowstreetcapital.com
Number of IPv4 Routes	2
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2012-07-11

ASN Intelligence API for production workflows

Use ASN data for AS18670 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
38.127.203.0/24	AS18670	Arrowstreet Capital, L.P.	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	256
199.85.22.0/23	AS18670	Arrowstreet Capital, L.P.	Arrowstreet Capital, L.P.	512

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:       18670
ASName:         ARROWSTREET
ASHandle:       AS18670
RegDate:        2012-07-11
Updated:        2012-07-11
Comment:        http://www.arrowstreetcapital.com
Comment:        
Comment:        Standard NOC hours are 3am to 9pm EST    
Ref:            https://rdap.arin.net/registry/autnum/18670


OrgName:        Arrowstreet Capital, L.P.
OrgId:          ACL-189
Address:        200 Clarendon Street
Address:        30th Floor
City:           Boston
StateProv:      MA
PostalCode:     02116
Country:        US
RegDate:        2012-05-25
Updated:        2024-11-25
Ref:            https://rdap.arin.net/registry/entity/ACL-189


OrgTechHandle: NETWO6602-ARIN
OrgTechName:   Network Engineers
OrgTechPhone:  +1-617-919-0100 
OrgTechEmail:  it_network_alerts@arrowstreetcapital.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO6602-ARIN

OrgAbuseHandle: NETWO6602-ARIN
OrgAbuseName:   Network Engineers
OrgAbusePhone:  +1-617-919-0100 
OrgAbuseEmail:  it_network_alerts@arrowstreetcapital.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO6602-ARIN

OrgNOCHandle: NETWO6602-ARIN
OrgNOCName:   Network Engineers
OrgNOCPhone:  +1-617-919-0100 
OrgNOCEmail:  it_network_alerts@arrowstreetcapital.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NETWO6602-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
AS46887	Crown Castle Fiber LLC	US
AS1239	Cogent Communications, LLC	US
AS174	Cogent Communications, LLC	US

Upstreams

AS Number	Description	Country
AS46887	Crown Castle Fiber LLC	US
AS174	Cogent Communications, LLC	US