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	Prefix	Description
	64.190.196.0/23	Interactive Brokers Corp
	64.190.197.0/24	Interactive Brokers Corp
	64.190.196.0/24	Interactive Brokers Corp
	209.127.240.0/24	Interactive Brokers Corp
	209.127.240.0/23	Interactive Brokers Corp
	209.127.241.0/24	Interactive Brokers Corp

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS32787	Akamai (Prolexic)	✔	✘
	AS6461	Zayo Bandwidth	✔	✘
	AS3356	Lumen (Level 3)	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS32787	Akamai (Prolexic)	✔	✘
	AS6461	Zayo Bandwidth	✔	✘
	AS3356	Lumen (Level 3)	✔	✘

ASHandle:       AS27163
OrgID:          IBL-40
ASName:         INTERACTIVE-BROKERS-CORP
ASNumber:       27163
RegDate:        2017-10-18
Updated:        2025-12-15
AbuseHandle:    CDC18-ARIN
Source:         ARIN



OrgID:          IBL-40
OrgName:        Interactive Brokers Corp
CanAllocate:    
Street:         2 Pickwick Plaza
City:           Greenwich
State/Prov:     CT
Country:        US
PostalCode:     06830
RegDate:        2017-07-21
Updated:        2025-12-16
OrgAdminHandle: LARKI23-ARIN
OrgTechHandle:  LARKI23-ARIN
OrgTechHandle:  LIAOW2-ARIN
OrgAbuseHandle: CDC18-ARIN
OrgAbuseHandle: LARKI23-ARIN
OrgNOCHandle:   LARKI23-ARIN
Source:         ARIN





OrgAdminHandle:       LARKI23-ARIN
OrgAdminName:         Robert Larkin
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        LARKI23-ARIN
OrgTechName:          Robert Larkin
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        LIAOW2-ARIN
OrgTechName:          Warren Liao
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       CDC18-ARIN
OrgAbuseName:         Cyber Center
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       LARKI23-ARIN
OrgAbuseName:         Robert Larkin
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         LARKI23-ARIN
OrgNOCName:           Robert Larkin
# Email removed, Log into bgp.tools to see whois emails


AbuseHandle:          CDC18-ARIN
AbuseName:            Cyber Center
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-06-14T03:27:09Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-kddcustomer2	8206
RADB	as-prole	1184
RADB	as-telstra-intl-customers	12432
LEVEL3	as-lumen-customers-asns	10695
RADB	as-pnapnyc	352