ＮＴＴ株式会社

NTT Communications Corporation
Data as of 2026-09-13
GLEIF verified
Complete entity footprint
11 linked clusters · 5,531 netblocks · 44,458,262 IPv4 addresses · 468 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
This organisation
Netblocks117 · 32,628 IPv4 addresses
IPv6 4 prefixes (largest 2401:4640::/32)
Registered in Japan (62) · China (15) · Netherlands (10) · Germany (7) · United Kingdom (5) · Hong Kong (4)
Also registered under this name 133 netblocks across 2 separate records
Record ID240775295
RegistryAPNIC
Owner jurisdictionJP
Customerssee who runs inside 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

IP Ranges (117)

⬇ 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 BGP ANNOUNCED ● 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 RIPE ASSIGNED PA ● 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
43.231.189.0/24 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
43.250.91.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
43.251.184.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
43.251.185.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
43.251.186.0/24 NTT_Communications_Corporation APNIC ASSIGNED NON-PORTABLE ● low
45.124.61.0/24 NTT_Communications_Corporation APNIC ALLOCATED 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
82.135.32.236/30 NTT-NET RIPE ASSIGNED PA ● low
82.135.33.192/30 NTT-NET RIPE ASSIGNED PA ● low
82.135.107.128/28 NTT-NET RIPE ASSIGNED PA ● low
83.231.223.192/29 NTT-NET RIPE ASSIGNED PA ● low
83.231.245.40/29 NTT-NET RIPE ASSIGNED PA ● low
83.231.245.48/29 NTT-NET RIPE ASSIGNED PA ● low
83.231.245.56/29 NTT-NET RIPE ASSIGNED PA ● low
88.220.44.56/29 NTT-NET RIPE ASSIGNED PA ● low
93.189.160.144/29 NTT RIPE ASSIGNED PA ● low
101.0.12.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
101.0.13.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
101.0.14.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
101.0.15.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
101.0.16.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
101.0.20.0/24 NTT_Communications_Corporation APNIC ASSIGNED NON-PORTABLE ● low
103.6.23.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.6.63.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.7.208.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.7.211.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.10.37.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.11.122.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.11.123.0/24 NTT_Communications_Corporation APNIC ASSIGNED NON-PORTABLE ● low
103.23.72.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.23.73.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.23.74.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.23.75.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.25.102.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.25.103.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.27.80.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.27.81.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.27.82.0/24 NTT_Communications_Corporation APNIC ASSIGNED NON-PORTABLE ● low
103.27.83.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.28.171.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.46.204.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.46.207.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.141.224.0/24 NTT APNIC ALLOCATED NON-PORTABLE ● low
103.141.225.0/24 NTT APNIC ALLOCATED NON-PORTABLE ● low
103.197.208.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.197.209.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.197.210.0/24 NTT_Communications_Corporation APNIC ASSIGNED NON-PORTABLE ● low
103.197.211.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.224.252.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.224.253.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.224.254.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.224.255.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.245.233.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
103.247.69.0/24 NTT_Communications_Corporation APNIC ASSIGNED NON-PORTABLE ● low
103.247.71.0/24 NTT_Communications_Corporation APNIC ASSIGNED NON-PORTABLE ● low
103.249.187.0/24 NTT_Communications_Corporation APNIC ASSIGNED NON-PORTABLE ● low
149.233.0.172 – 149.233.0.174 NTT RIPE ASSIGNED PA ● low
149.233.0.176/29 NTT RIPE ASSIGNED PA ● low
188.174.253.64/28 NTT-NET RIPE ASSIGNED PA ● low
195.116.29.0/29 NTT-COMMUNICATIONS RIPE ASSIGNED PA ● low
203.115.195.248/29 NTT APNIC ASSIGNED NON-PORTABLE ● low
206.109.68.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
206.109.68.0/23 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
212.119.23.128/29 NTT-NET RIPE ASSIGNED PA ● low
213.139.234.0/24 NTT_Communications_Corporation APNIC ALLOCATED NON-PORTABLE ● low
217.70.104.64/27 NTT RIPE ASSIGNED PA ● low
2a07:e80:0:8f::/64 NTT RIPE ASSIGNED ● low
2a07:e80:0:91::/64 NTT RIPE ASSIGNED ● low

IPv6 ranges (4)

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

Footprint over time

12 weekly snapshots · JSON
119 +10 netblocks since 2026-07-05
2026-07-05 peak 120 2026-09-13

Corporate group (11 confirmed entities)

+924 additional unconfirmed candidates not shown — full list (JSON)

Network trust

what's this?
RPKI hygiene: A how networks compare →
95.8% of checked blocks have valid RPKI ROA coverage (114 of 119)
Possible discrepancies (17)

These blocks are registered to NTT Communications Corporation but cryptographically authorized for a different, unrelated network (4 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

206.109.68.0/23 /23 authorized for AS149513 — Vertex Connectivity LLC
103.10.37.0/24 /24 authorized for AS23532 — IOVZ NETWORKS INC
43.250.91.0/24 /24 authorized for AS5065 — Bunny Communications
103.6.23.0/24 /24 authorized for AS23532 — IOVZ NETWORKS INC
43.251.184.0/24 /24 authorized for AS5065 — Bunny Communications
43.251.186.0/24 /24 authorized for AS5065 — Bunny Communications
43.251.185.0/24 /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
43.231.189.0/24 /24 authorized for AS23532 — IOVZ NETWORKS INC
45.124.61.0/24 /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
+2 more — see the REST API

NIC Handles

AD1155-AP AF599-AP AG191-AP AG191-AP AH915-AP AN880-AP AN941-AP AO253-AP AR834 AS18259 AS3552-AP AS3815-AP +88 more