AS2538 IBM

IBM-PLP - IBM · registered in the United States

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in United States#13,659largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#62,975of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS2538 in ASN lookup Look up an IP in this network (192.86.31.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

192.86.31.0/24

Other ASNs named IBM

12 other networks use the same organisation name; together with AS2538 they announce 99,328 IPv4 addresses.

ASNNameIPv4 addresses

AS1747IBMWATSON-AS - IBM US49,920

AS27530CORNEJO - IBM US16,384

AS10676GLOBALEC - IBM US12,288

AS15293ASN-ISS-ATL - IBM US9,728

AS17390CIO-ORGANIZATION - IBM US7,680

AS27477POLAR-PUBLIC-HUB-POP-ASN - IBM US768

AS22538IBM-CIOUS - IBM US512

AS23257IBMCCH-DAL-EQU - IBM US512

AS26543IBM-CMS-RPL - IBM US512

AS23145CALL-HOME-EDGE-CLOUD-FLARE - IBM US256

AS547ASN-IBM-LEX - IBM US256

AS393850CLEVERSAFE - IBM US256

Similar-sized networks in United States

ASNNameIPv4 addresses

AS1975#13656 PROQUEST-AS - PROQUEST LLC256

AS2020#13657 ADHESIVE-ASN - Adhesives Research, Inc.256

AS2031#13658 AWWASN - American Water Works Company Inc.256

AS2539#13660 GLAXOSMITHKLINE - GlaxoSmithKline256

AS2717#13661 CUMMINS-AS1 - Cummins Inc.256

AS2723#13662 ENDURANCE - ENDURANCE REINSURANCE CORPORATION OF AMERICA256

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