AT&T Japan K.K.
BGP inherited
Complete entity footprint
3 linked clusters ·
4,644 netblocks ·
230,220,954 IPv4 addresses
This organisation's clusters combined by evidence —
shared operating domain prserv.net
— not name similarity, so genuinely different organisations that share a name are excluded.
Cluster stats
| Netblocks | 53 · 338,640 IPv4 addresses |
| Registered in | Japan (32) · United States (11) · Netherlands (4) · Hong Kong (1) |
| Cluster ID | 208791497 |
| Registry | APNIC |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 23 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
Footprint over time
5 weekly snapshots · JSON
53
0 netblocks since 2026-07-05
2026-07-05
peak 53
2026-07-19
IP Ranges (53)
showing 50 of 53 — see all — ⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 12.4.245.0/24 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 12.71.144.0/24 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 12.145.43.0/24 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 12.188.104.0/24 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 12.193.12.0/24 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 12.232.118.0/24 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 32.5.131.0/24 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 32.24.88.0/24 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 32.24.89.0/24 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 32.24.93.0/24 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 32.39.68.0/24 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 193.149.194.0/24 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 194.69.169.0/24 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 194.69.173.0/24 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 194.69.178.0/24 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 203.163.94.0/24 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 210.7.102.0/24 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 210.7.103.0/24 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 210.88.188.0/22 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 2607:f6f0:3005::/48 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 2607:f6f0:4003::/48 | AT&T Japan K.K. | BGP | ANNOUNCED | ● high |
| 122.248.128.0/18 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 166.100.0.0/16 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 202.2.128.0/17 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 202.74.96.0/19 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 202.135.0.0/16 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 203.92.208.0/20 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 203.163.0.0/18 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 203.163.64.0/18 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 203.171.128.0/19 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 203.194.64.0/19 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 203.196.96.0/19 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 203.196.112.0/20 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 210.7.96.0/19 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 210.7.128.0/17 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 210.88.0.0/20 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 210.88.144.0/20 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 210.88.160.0/20 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 210.88.176.0/21 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 210.88.184.0/22 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 210.88.188.0/22 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 210.88.216.0/22 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 210.88.220.0/23 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 210.88.222.0/24 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 210.88.236.0/22 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 210.88.240.0/20 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 210.89.0.0/19 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 210.89.100.0/23 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 210.89.104.0/21 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
| 210.89.112.0/20 | AT&T Japan K.K. | APNIC | ALLOCATED PORTABLE | ● low |
Network trust
what's this?
RPKI hygiene: F
how networks compare →
1.9%
of checked blocks have valid RPKI ROA coverage
(1 of 53)
No discrepancies found among checked blocks.
NIC Handles
AA1420-AP
AD103-AP
AD103-AP
AI42-AP
AI42-AP
AI43-AP
AI43-AP
APNIC-HM
AS134530
AS134533
AS134534
AS134536
+11 more