GMOグローバルサイン株式会社

GMO GlobalSign Holdings K.K.
Data as of 2026-07-26
GLEIF verified
Complete entity footprint
3 linked clusters · 357 netblocks · 672,523 IPv4 addresses · 40 IPv6 prefixes
This organisation's clusters combined by evidence — shared GLEIF corporate family — not name similarity, so genuinely different organisations that share a name are excluded.
View the full entity page →
LEI
353800KCIOO2YWF3VP62
Registered name
GMOグローバルサイン株式会社
Jurisdiction
JP
Ultimate parent
ＧＭＯインターネットグループ株式会社
529900BFZEY3BESHBW90
Cluster stats
Netblocks78 · 93,696 IPv4 addresses
IPv6 18 prefixes (largest 2a07:1b40::/29)
Registered in Japan (56) · United Kingdom (4)
All fragments 84 blocks across 2 clusters
Cluster ID213350557
RegistryBGP
Owner jurisdictionJP
Customersfind customers using this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 353800KCIOO2YWF3VP62
Shared handles clustered on 10 shared RIR contact/maintainer handles
Registry names 4 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

6 weekly snapshots · JSON
78 +7 netblocks since 2026-07-05
2026-07-05 peak 78 2026-07-26

IP Ranges (78)

showing 50 of 78 — see all — ⬇ export CSV
CIDR Org name Registry Status Confidence
133.117.148.0/22 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
133.117.148.0/23 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
133.117.150.0/23 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
133.117.152.0/21 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
133.117.152.0/22 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
133.117.156.0/22 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.122.0.0/16 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.122.0.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.122.16.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.122.32.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.122.48.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.122.64.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.122.80.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.122.96.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.122.112.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.122.128.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.122.144.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.122.160.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.122.176.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.122.192.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.122.208.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.122.224.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.122.240.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.123.0.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.123.0.0/24 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.123.2.0/24 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.123.3.0/24 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.123.4.0/23 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.123.6.0/23 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.123.8.0/23 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.123.16.0/21 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.123.16.0/22 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.123.20.0/22 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.124.128.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.124.128.0/23 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.124.128.0/24 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.124.132.0/24 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.124.144.0/21 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.124.144.0/22 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
153.124.148.0/22 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
157.120.112.0/24 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
157.120.113.0/24 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
157.120.114.0/24 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
157.120.115.0/24 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
180.131.136.0/22 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
180.131.136.0/21 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
180.131.140.0/22 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
180.222.176.0/20 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
180.222.176.0/21 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high
180.222.184.0/21 GMO GlobalSign Holdings K.K. BGP ANNOUNCED ● high

IPv6 ranges (18)

showing the 15 largest allocations
CIDR
2a07:1b40::/29
2a07:1b40::/32
2a07:1b41::/32
2a07:1b42::/32
2406:a1c0:100::/40
2406:a1c0:200::/40
2406:a1c0:300::/40
2406:a1c0:400::/40
2406:a1c0:100::/41
2406:a1c0:180::/41
2406:a1c0:200::/41
2406:a1c0:280::/41
2406:a1c0:300::/41
2406:a1c0:380::/41
2406:a1c0:400::/41

Corporate group (3 confirmed entities)

Network trust

what's this?
RPKI hygiene: B how networks compare →
89.7% of checked blocks have valid RPKI ROA coverage (70 of 78)
Possible discrepancies (1)

These blocks are registered to GMO GlobalSign Holdings K.K. but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

2a00:2381:27dc::/48 /48 authorized for AS2856 — British Telecommunications Limited

NIC Handles

AS131921 AS146987 AS48804 BTNET-MNT DUMY-RIPE DUMY-RIPE ORG-GGL4-RIPE RIPE-NCC-HM-MNT uk-globalsign-1-mnt uk-globalsign-1-mnt