AS25255 H3G-Austria-AS Hutchison Drei Austria GmbH

H3G-Austria-AS Hutchison Drei Austria GmbH · registered in Austria

IPv4 addresses575,23234 prefixes · 0.018% of announced IPv4

Rank in Austria#3largest network in AT by IPv4 space, of 619 · 5.57% of AT

Rank worldwide#523of 79,396 networks with IPv4

IPv65 x /32 (327,936 x /48)3 prefixes

CountryAustria646 ASNs registered there

Open AS25255 in ASN lookup Look up an IP in this network (45.3.56.1) All networks in Austria

IPv4 prefixes

All 34 prefixes, in address order.

45.3.56.0/24
46.220.0.0/16
77.116.0.0/15
77.119.0.0/18
77.119.128.0/19
77.119.160.0/20
77.119.176.0/20
77.119.192.0/18
81.3.192.0/23
81.3.196.0/22
81.3.200.0/23
81.3.202.0/23
81.3.204.0/22
81.3.208.0/22
81.3.212.0/22
81.3.216.0/21
81.3.224.0/19
91.141.0.0/17
94.245.192.0/18
109.126.64.0/18
151.5.88.0/21
178.112.0.0/15
178.115.0.0/18
178.115.64.0/19
178.115.128.0/17
178.165.128.0/17
194.24.128.0/19
213.94.64.0/21
213.94.72.0/22
213.94.76.0/24
213.94.77.0/24
213.94.78.0/23
213.94.80.0/20
213.94.96.0/19

IPv6 prefixes

All 3 prefixes.

2a02:2861::/32
2a02:2864::/30
2a07:7e82::/40

Similar-sized networks in Austria

ASNNameIPv4 addresses

AS8447#1 A1TELEKOM-AT A1 Telekom Austria AG2,743,808

AS8412#2 TMA T-Mobile Austria GmbH1,554,176

AS8437#4 UTA-AS Hutchison Drei Austria GmbH550,399

AS1853#5 ACOnet - ACONET334,080

AS8445#6 SALZBURG-AG-AS SALZBURG AG fur Energie, Verkehr und Telekommunikation249,600

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