AS151855 SOUTH TELECOMMUNICATIONS SOFTWARE JOINT STOCK COMPANY

SOUTH-VN - SOUTH TELECOMMUNICATIONS SOFTWARE JOINT STOCK COMPANY · registered in Vietnam

IPv4 addresses5121 prefixes · <0.001% of announced IPv4

Rank in Vietnam#266largest network in VN by IPv4 space, of 539 · <0.01% of VN

Rank worldwide#47,874of 79,396 networks with IPv4

IPv68 x /485 prefixes

CountryVietnam551 ASNs registered there

Open AS151855 in ASN lookup Look up an IP in this network (103.242.100.1) All networks in Vietnam

IPv4 prefixes

All 1 prefix, in address order.

103.242.100.0/23

IPv6 prefixes

All 5 prefixes.

2401:4220::/47
2401:4220:2::/48
2401:4220:10::/47
2401:4220:12::/48
2401:4220:1000::/47

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AS55318#267 ACB-AS-VN - Asia Commercial Bank512

AS152966#268 ALGO-VN - ALGO DATA SERVICES COMPANY LIMITED512

AS131350#269 ICTDAKNONG-AS-VN - Dak Nong Department of Information and Communications512

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