AS399536 Progress Business Systems, Inc.

PROGRESSBIZ-BGP - Progress Business Systems, Inc. · registered in the United States

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in United States#17,714largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#78,651of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS399536 in ASN lookup Look up an IP in this network (208.79.136.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

208.79.136.0/24

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ASNNameIPv4 addresses

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

AS399530#17713 CIR-DC-02 - Cambridge Investment Research, Inc.256

AS399539#17715 COTTAGE-HEALTH01 - Cottage Health256

AS399540#17716 ABSCI-US-001 - AbSci Corporation256

AS399551#17717 MILLENNIUM-SYSTEMS-INC - Millennium Systems, Inc.256

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