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	Prefix	Description
	38.127.203.0/24	Cogent Communications, LLC
	199.85.22.0/23	Arrowstreet Capital, L.P.

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS46887	Crown Castle Fiber LLC	✔	✘
	AS174	Cogent Communications, LLC	✔	✘
	AS3257	GTT Communications Inc.	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS46887	Crown Castle Fiber LLC	✔	✘
	AS174	Cogent Communications, LLC	✔	✘
	AS3257	GTT Communications Inc.	✔	✘
	AS1239	Sprint Wireline (Cogent)	✔	✘
	AS8928	GTT Communications Inc.	✔	✘

ASHandle:       AS18670
OrgID:          ACL-189
ASName:         ARROWSTREET
ASNumber:       18670
RegDate:        2012-07-11
Comment:        http://www.arrowstreetcapital.com
Comment:        Standard NOC hours are 3am to 9pm EST
Updated:        2012-07-11
Source:         ARIN



OrgID:          ACL-189
OrgName:        Arrowstreet Capital, L.P.
CanAllocate:    
Street:         200 Clarendon Street
Street:         30th Floor
City:           Boston
State/Prov:     MA
Country:        US
PostalCode:     02116
RegDate:        2012-05-25
Updated:        2024-11-25
OrgAdminHandle: NETWO6602-ARIN
OrgTechHandle:  NETWO6602-ARIN
OrgAbuseHandle: NETWO6602-ARIN
OrgNOCHandle:   NETWO6602-ARIN
Source:         ARIN





OrgAdminHandle:       NETWO6602-ARIN
OrgAdminName:          Network Engineers
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        NETWO6602-ARIN
OrgTechName:           Network Engineers
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       NETWO6602-ARIN
OrgAbuseName:          Network Engineers
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         NETWO6602-ARIN
OrgNOCName:            Network Engineers
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-05-07T03:38:41Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-comcast-edia	2766
RADB	as-ec-dc	131
RADB	as-ccf	1530
RADB	as-ccf-test	1461
RIPE	as-gttcust	91231