AS11889 iBasis, Inc.

IVANET-DAL - iBasis, Inc. · registered in the United States

IPv4 addresses4,09612 prefixes · <0.001% of announced IPv4

Rank in United States#4,549largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#15,450of 79,396 networks with IPv4

IPv6256 x /481 prefixes

CountryUnited States18,679 ASNs registered there

Open AS11889 in ASN lookup Look up an IP in this network (38.80.79.1) All networks in United States

IPv4 prefixes

All 12 prefixes, in address order.

38.80.79.0/24
149.7.8.0/24
149.13.168.0/23
149.13.170.0/24
149.36.165.0/24
149.36.168.0/23
216.49.201.0/24
216.168.164.0/24
216.168.169.0/24
216.168.184.0/23
216.168.188.0/23
216.168.191.0/24

IPv6 prefixes

All 1 prefix.

2605:bf80:100::/40

Other ASNs named iBasis, Inc.

4 other networks use the same organisation name; together with AS11889 they announce 10,752 IPv4 addresses.

ASNNameIPv4 addresses

AS14616IVANET-AMSTERDAM - IBASIS INC. US4,864

AS15315IVANET-LISBON - IBASIS INC. US1,024

AS18622IVANET-YTO - IBASIS INC. US512

AS13556IVANET-MIAMI - IBASIS INC. US256

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ASNNameIPv4 addresses

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AS16478#4551 COLONIALNET-IU20 - Colonial IU 204,096

AS17326#4552 CONCORDIA-COLLEGE - Concordia College4,096

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