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Less Specific Announcements

	Prefix	Description
	38.0.0.0/8	Cogent Communications, LLC

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description
	AS13335	Cloudflare, Inc.

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Peers

	ASN	Description
	AS13335	Cloudflare, Inc.

#
# 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.
#


#
# Query terms are ambiguous.  The query is assumed to be:
#     "r + < 38.65.195.0/24"
#
# Use "?" to get help.
#


# start

NetRange:       38.0.0.0 - 38.255.255.255
CIDR:           38.0.0.0/8
NetName:        COGENT-A
NetHandle:      NET-38-0-0-0-1
Parent:          ()
NetType:        Direct Allocation
OriginAS:       
Organization:   Cogent Communications, LLC (COGC)
RegDate:        1991-04-16
Updated:        2025-09-23
Ref:            https://rdap.arin.net/registry/ip/38.0.0.0



OrgName:        Cogent Communications, LLC
OrgId:          COGC
Address:        2450 N Street NW
City:           Washington
StateProv:      DC
PostalCode:     20037
Country:        US
RegDate:        2000-05-30
Updated:        2025-09-23
Comment:        Geofeed https://geofeed.cogentco.com/geofeed.csv
Ref:            https://rdap.arin.net/registry/entity/COGC

ReferralServer:  rwhois://rwhois.cogentco.com:4321

OrgNOCHandle: ZC108-ARIN
OrgNOCName:   Cogent Communications
OrgNOCPhone:  +1-877-875-4311 
OrgNOCEmail:  noc@cogentco.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/ZC108-ARIN

OrgTechHandle: IPALL-ARIN
OrgTechName:   IP Allocation
OrgTechPhone:  +1-877-875-4311 
OrgTechEmail:  ipalloc@cogentco.com
OrgTechRef:    https://rdap.arin.net/registry/entity/IPALL-ARIN

OrgAbuseHandle: COGEN-ARIN
OrgAbuseName:   Cogent Abuse
OrgAbusePhone:  +1-877-875-4311 
OrgAbuseEmail:  abuse@cogentco.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/COGEN-ARIN

# end


# start

NetRange:       38.65.195.0 - 38.65.195.255
CIDR:           38.65.195.0/24
NetName:        TRADEWEB-CGNT-NET-1
NetHandle:      NET-38-65-195-0-1
Parent:         COGENT-A (NET-38-0-0-0-1)
NetType:        Reassigned
OriginAS:       
Organization:   TradeWeb, LLC (TRADEW-1)
RegDate:        2020-05-15
Updated:        2020-05-15
Ref:            https://rdap.arin.net/registry/ip/38.65.195.0


OrgName:        TradeWeb, LLC
OrgId:          TRADEW-1
Address:        2200 Harborside Financial Center
City:           Jersey City
StateProv:      NJ
PostalCode:     07311
Country:        US
RegDate:        1997-08-28
Updated:        2011-11-08
Ref:            https://rdap.arin.net/registry/entity/TRADEW-1


OrgAbuseHandle: USNET-ARIN
OrgAbuseName:   usnetwork
OrgAbusePhone:  +1-201-536-5820 
OrgAbuseEmail:  usnetwork@tradeweb.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/USNET-ARIN

OrgTechHandle: USNET-ARIN
OrgTechName:   usnetwork
OrgTechPhone:  +1-201-536-5820 
OrgTechEmail:  usnetwork@tradeweb.com
OrgTechRef:    https://rdap.arin.net/registry/entity/USNET-ARIN

# end



#
# 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.
#

Last Update: 2026-05-19T10:00:17Z UTC

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IRR Databases

IRR	Expected ASN
arin	AS10584	Show Raw route: 38.65.195.0/24 origin: AS10584 descr: Tradeweb Markets 185 Hudson Street Jersey City, NJ 07311 admin-c: USNET-ARIN tech-c: USNET-ARIN mnt-by: MNT-TRADEW-1 created: 2026-05-13T18:23:25Z last-modified: 2026-05-13T18:23:25Z source: ARIN