ＮＴＴ株式会社

NTT Communications Corporation
Data as of 2026-07-26
GLEIF verified
Complete entity footprint
8 linked clusters · 5,259 netblocks · 43,276,873 IPv4 addresses · 461 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
353800VHQU5VIXVUA841
Registered name
ＮＴＴ株式会社
Jurisdiction
JP
Ultimate parent
No parent on file in GLEIF
Cluster stats
Netblocks107 · 30,068 IPv4 addresses
IPv6 4 prefixes (largest 2401:4640::/32)
Registered in Japan (54) · China (15) · Netherlands (10) · Germany (7) · United Kingdom (5) · GG (2)
All fragments 123 blocks across 2 clusters
Cluster ID213213389
RegistryAPNIC
Owner jurisdictionJP
Customersfind customers using this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 353800VHQU5VIXVUA841
Shared handles clustered on 100 shared RIR contact/maintainer handles
Registry names 12 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

6 weekly snapshots · JSON
109 0 netblocks since 2026-07-05
2026-07-05 peak 109 2026-07-26

IP Ranges (107)

showing 50 of 107 — see all — ⬇ export CSV
CIDR Org name Registry Status Confidence
31.193.240.0/22 NTT Communications Corporation RIPE SUB-ALLOCATED PA ● high
31.193.244.0/22 NTT Communications Corporation RIPE SUB-ALLOCATED PA ● high
31.222.208.0/22 NTT Communications Corporation RIPE ASSIGNED PA ● high
31.222.212.0/22 NTT Communications Corporation RIPE ASSIGNED PA ● high
46.243.170.0/24 LLC NTT RIPE ASSIGNED PA ● high
50.20.224.0/21 NTT Communications Corporation RIPE SUB-ALLOCATED PA ● high
114.255.57.96/27 NTT-CO APNIC ASSIGNED NON-PORTABLE ● high
114.255.168.64/28 NTT-CO APNIC ASSIGNED NON-PORTABLE ● high
114.255.231.240/28 NTT-CO APNIC ASSIGNED NON-PORTABLE ● high
116.228.20.52/30 NTT-CO APNIC ASSIGNED NON-PORTABLE ● high
116.228.201.12/30 NTT-CO APNIC ASSIGNED NON-PORTABLE ● high
125.35.16.192/27 NTT-CO APNIC ASSIGNED NON-PORTABLE ● high
125.35.16.224/27 NTT-CO APNIC ASSIGNED NON-PORTABLE ● high
168.199.236.0/22 NTT Communications Corporation RIPE SUB-ALLOCATED PA ● high
168.199.248.0/22 NTT Communications Corporation RIPE ASSIGNED PA ● high
170.62.112.0/22 NTT Communications Corporation RIPE ASSIGNED PA ● high
170.62.116.0/22 NTT Communications Corporation RIPE ASSIGNED PA ● high
178.170.252.0/24 LLC NTT BGP ANNOUNCED ● high
180.168.29.168/29 NTT APNIC ASSIGNED NON-PORTABLE ● high
195.180.156.0/22 NTT Communications Corporation RIPE SUB-ALLOCATED PA ● high
202.108.94.216/29 NTT-CO APNIC ASSIGNED NON-PORTABLE ● high
202.108.188.0/29 NTT-CO APNIC ASSIGNED NON-PORTABLE ● high
202.178.96.0/20 NTT Communications Corporation BGP ANNOUNCED ● high
202.178.96.0/21 NTT Communications Corporation BGP ANNOUNCED ● high
202.178.104.0/22 NTT Communications Corporation BGP ANNOUNCED ● high
202.178.104.0/24 NTT Communications Corporation BGP ANNOUNCED ● high
202.178.106.0/23 NTT Communications Corporation BGP ANNOUNCED ● high
202.178.108.0/22 NTT Communications Corporation BGP ANNOUNCED ● high
203.221.1.56/29 NTT APNIC ASSIGNED NON-PORTABLE ● high
212.69.88.0/22 NTT Communications Corporation RIPE SUB-ALLOCATED PA ● high
2001:218:2200::/40 NTT Communications Corporation BGP ANNOUNCED ● high
2401:4640::/32 NTT Communications Corporation BGP ANNOUNCED ● high
14.137.240.0/24 NTT-Communications-Corporation APNIC ALLOCATED NON-PORTABLE ● low
43.231.190.0/24 NTT_Communications_Corporation APNIC ASSIGNED NON-PORTABLE ● low
43.231.191.0/24 NTT_Communications_Corporation APNIC ASSIGNED NON-PORTABLE ● low
49.0.176.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
49.0.177.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
49.0.178.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
49.0.179.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
49.0.180.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
49.0.181.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
49.0.182.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
49.0.183.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
61.129.55.97 – 61.129.55.98 NTT-COMMUNICATIONS APNIC ASSIGNED NON-PORTABLE ● low
61.129.67.111 – 61.129.67.113 NTT-COMMUNICATIONS APNIC ASSIGNED NON-PORTABLE ● low
61.129.67.114 – 61.129.67.119 NTT-COMMUNICATIONS APNIC ASSIGNED NON-PORTABLE ● low
61.129.83.83 – 61.129.83.84 NTT-COMMUNICATIONS APNIC ASSIGNED NON-PORTABLE ● low
61.129.85.96/28 NTT-COMMUNICATIONS APNIC ASSIGNED NON-PORTABLE ● low
78.41.0.172/30 NTT RIPE ASSIGNED PA ● low
80.237.40.224/28 NTT-NET RIPE ASSIGNED PA ● low

IPv6 ranges (4)

CIDR
2401:4640::/32
2001:218:2200::/40
2a07:e80:0:8f::/64
2a07:e80:0:91::/64

Corporate group (8 confirmed entities)

+905 additional unconfirmed candidates not shown — full list (JSON)

Network trust

what's this?
RPKI hygiene: B how networks compare →
90.8% of checked blocks have valid RPKI ROA coverage (99 of 109)
Possible discrepancies (7)

These blocks are registered to NTT Communications Corporation but cryptographically authorized for a different, unrelated network (2 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

103.6.23.0/24 /24 authorized for AS23532 — IOVZ NETWORKS INC
103.23.72.0/24 /24 authorized for AS23532 — IOVZ NETWORKS INC
103.23.73.0/24 /24 authorized for AS23532 — IOVZ NETWORKS INC
103.23.74.0/24 /24 authorized for AS23532 — IOVZ NETWORKS INC
103.23.75.0/24 /24 authorized for AS23532 — IOVZ NETWORKS INC
103.141.224.0/24 /24 authorized for AS148996 — GLOBAL COMMUNICATION NETWORK LIMITED
103.141.225.0/24 /24 authorized for AS148996 — GLOBAL COMMUNICATION NETWORK LIMITED

NIC Handles

AD1155-AP AG191-AP AG191-AP AH915-AP AN880-AP AN941-AP AO253-AP AR834 AS18259 AS3552-AP AS60124 AW972-AP +88 more