AS399530 Cambridge Investment Research, Inc.

CIR-DC-02 - Cambridge Investment Research, Inc. · registered in the United States

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in United States#17,713largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#78,650of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS399530 in ASN lookup Look up an IP in this network (173.209.229.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

173.209.229.0/24

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ASNNameIPv4 addresses

AS399514#17710 HORIZONBANK - Horizon Bank256

AS399515#17711 PEERTAG-INFRA-CORE - PeerTag LLC256

AS399529#17712 KIRKLAND-ELLIS-AU - Kirkland & Ellis LLP256

AS399536#17714 PROGRESSBIZ-BGP - Progress Business Systems, Inc.256

AS399539#17715 COTTAGE-HEALTH01 - Cottage Health256

AS399540#17716 ABSCI-US-001 - AbSci Corporation256

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources