gtt-net.cz
One organisation, resolved across 2 separately-registered clusters
linked by shared operating domain gtt-net.cz — not name similarity, so
genuinely different organisations that share a name are excluded.
Data as of 2026-10-04
2 clusters ·
2,585 netblocks ·
8,800,550 IPv4 addresses ·
114 IPv6 prefixes
IPv6 ranges (114)
- 2001:668::/29
- 2a00:1800::/29
- 2a00:e580::/29
- 2a02:d00::/29
- 2a04:6640::/29
- 2a05:18c0::/29
- 2a07:7a00::/29
- 2a0a:3340::/29
- 2a0a:bdc0::/29
- 2a13:fc00::/29
- 2a14:4340::/29
- 2a14:4b00::/29
- 2a14:5200::/29
- 2a04:1120::/30
- 2a05:1200::/30
- 2a0c:8640::/30
- 2001:1478::/32
- 2001:1510::/32
- 2001:4890::/32
- 2001:590::/32
- 2001:668::/32
- 2001:680::/32
- 2001:6f8::/32
- 2001:aa0::/32
- 2400:f780::/32
- 2405:5e00::/32
- 2604:cf80::/32
- 2605:d480::/32
- 2606:6200::/32
- 2607:f588::/32
- 2610:38::/32
- 2a00:16c8::/32
- 2a00:1750::/32
- 2a00:1800::/32
- 2a00:1807::/32
- 2a00:43c0::/32
- 2a00:7f40::/32
- 2a00:80c0::/32
- 2a00:8d00::/32
- 2a00:bb40::/32
- 2a01:98::/32
- 2a02:25b0::/32
- 2a02:6280::/32
- 2a02:9e8::/32
- 2a02:d00::/32
- 2a02:d28::/32
- 2a03:1180::/32
- 2a03:de80::/32
- 2a04:a3c7::/32
- 2a06:2b81::/32
- 2a0a:4080::/32
- 2a0a:6041::/32
- 2a0a:b6c0::/32
- 2a0d:d901::/32
- 2a0f:b242::/32
- 2a0f:b243::/32
- 2a0f:b247::/32
- 2a14:d281::/32
- 2001:aa0:7000::/36
- 2001:590:3400::/38
- 2001:6f8:1800::/39
- 2001:6f8:200::/39
- 2a01:a040:100::/40
- 2a01:a040::/40
- 2602:ffb7:590::/46
- 2001:1478:1801::/48
- 2001:1478:201::/48
- 2001:1478:700::/48
- 2001:668:117::/48
- 2001:668:118::/48
- 2001:668:126::/48
- 2001:668:130::/48
- 2001:67c:1514::/48
- 2001:680:16::/48
- 2001:6f8:1903::/48
- 2001:6f8:206::/48
- 2600:1407:1c::/48
- 2620:131:2024::/48
- 2620:135:7003::/48
- 2a00:16c8:10b::/48
- 2a00:16c8:10c::/48
- 2a00:1800::/48
- 2a00:4b00:171::/48
- 2a00:7580:16::/48
- 2a01:430:295::/48
- 2a01:a040:200e::/48
- 2a01:a040:2010::/48
- 2a04:e00:2::/48
- 2a05:a882:de10::/48
- 2a06:1180:12bb::/48
- 2a0a:2d04:9825::/48
- 2a0c:7881:98dd::/48
- 2a0e:15c0:1213::/48
- 2a0f:7d00:32ba::/48
- 2001:668:10f:1100::/56
- 2001:668:10f:2400::/56
- 2001:668:10f:4000::/56
- 2001:668:10f:4100::/56
- 2a02:b98:0:2244::/62
- 2001:4c08:2003:26::/64
- 2001:4d78:500:5e7::/64
- 2001:668:1f8::/64
- 2400:f780:1f:ffff::/64
- 2a04:6640:ffff:ffff::/64
- 2001:12f8::218:174/128
- 2001:43f8:6d0::10:50/128
- 2001:504:0:7::3257:1/128
- 2001:7f8:4::cb9:1/128
- 2001:7f8:73::104:0:1/128
- 2001:7f8::cb9:0:3/128
- 2001:de8:4::3257:1/128
- 2001:de8:5::3257:1/128
- 2001:de8:6::5580:1/128
- 2001:de8:7::3257:1/128
Member clusters
- GTT Communications Inc. US-DE 2,676 netblocks
- CEZNET s.r.o. 87 netblocks