AS27530 IBM

CORNEJO - IBM · registered in the United States

IPv4 addresses16,3847 prefixes · <0.001% of announced IPv4

Rank in United States#2,373largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#7,033of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS27530 in ASN lookup Look up an IP in this network (129.34.64.1) All networks in United States

IPv4 prefixes

All 7 prefixes, in address order.

129.34.64.0/19
129.34.96.0/20
129.34.112.0/21
129.34.120.0/24
129.34.121.0/24
129.34.122.0/23
129.34.124.0/22

Other ASNs named IBM

12 other networks use the same organisation name; together with AS27530 they announce 99,328 IPv4 addresses.

ASNNameIPv4 addresses

AS1747IBMWATSON-AS - IBM US49,920

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

AS2538IBM-PLP - IBM US256

AS393850CLEVERSAFE - IBM US256

Similar-sized networks in United States

ASNNameIPv4 addresses

AS26724#2370 NEPTEL-AS - The North-Eastern Pennsylvania Telephone Company16,384

AS26760#2371 SKTC-NET - Southern Kansas Telephone Co., Inc.16,384

AS27422#2372 TNSTATE - Tennessee State University16,384

AS30075#2374 LWSD414 - Lake Washington School District #41416,384

AS30497#2375 GTBAS - Global Telecom Brokers16,384

AS31975#2376 SEWANEE - University of the South16,384

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