AS4651
The Communications Authority of Thailand (CAT)
THCarrier2026-10-13
Announced prefixes 38
61.19.0.0/2461.19.1.0/2461.19.2.0/2461.19.4.0/2461.19.7.0/2461.19.9.0/2461.19.14.0/2466.114.56.0/2493.188.128.0/2493.188.129.0/24122.155.224.0/24122.155.225.0/24122.155.226.0/24122.155.227.0/24122.155.229.0/24122.155.230.0/24122.155.232.0/24122.155.235.0/24122.155.236.0/24122.155.237.0/24122.155.238.0/24122.155.239.0/24122.155.240.0/24122.155.242.0/24122.155.243.0/24122.155.244.0/22122.155.244.0/24148.253.59.0/24163.171.105.0/24163.171.106.0/24163.171.108.0/24163.171.120.0/24163.171.121.0/24174.35.3.0/24174.35.53.0/24185.27.231.0/24202.47.253.0/242001:c38:5000::/48Snapshot history
| Date | Name | Country | Class | Prefixes |
|---|---|---|---|---|
| 2026-11-11 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-11-10 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-11-09 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-11-08 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-11-07 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-11-06 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-11-05 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-11-04 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-11-03 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-11-02 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-11-01 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-31 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-30 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-29 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-28 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-27 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-26 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-25 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-24 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-23 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-22 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-21 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-20 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-19 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-18 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-17 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-16 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-15 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-14 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-13 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-10-12 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-11 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-10 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-10-09 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-08 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-07 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-10-06 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-05 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-04 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-03 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-02 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-10-01 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-30 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-29 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-28 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-27 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-26 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-25 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-24 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-23 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-22 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-21 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-20 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-19 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-18 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-17 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-16 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-15 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-14 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-13 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-12 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-11 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-10 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-09-09 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-08 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-07 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-06 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-05 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-04 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-03 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-02 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-09-01 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-08-31 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-08-30 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-08-29 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-08-28 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-08-27 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-08-26 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-08-25 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-08-24 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-08-23 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-08-22 | The Communications Authority of Thailand (CAT) | TH | Carrier | 40 |
| 2026-08-21 | The Communications Authority of Thailand (CAT) | TH | Carrier | 41 |
| 2026-08-20 | The Communications Authority of Thailand (CAT) | TH | Carrier | 41 |
| 2026-08-19 | The Communications Authority of Thailand (CAT) | TH | Carrier | 41 |
| 2026-08-18 | The Communications Authority of Thailand (CAT) | TH | Carrier | 41 |
| 2026-08-17 | The Communications Authority of Thailand (CAT) | TH | Carrier | 41 |
| 2026-08-16 | The Communications Authority of Thailand (CAT) | TH | Carrier | 41 |
| 2026-08-15 | The Communications Authority of Thailand (CAT) | TH | Carrier | 41 |
| 2026-08-14 | The Communications Authority of Thailand (CAT) | TH | Carrier | 39 |
| 2026-08-13 | The Communications Authority of Thailand (CAT) | TH | Carrier | 39 |
| 2026-08-12 | The Communications Authority of Thailand (CAT) | TH | Carrier | 39 |
| 2026-08-11 | The Communications Authority of Thailand (CAT) | TH | Carrier | 39 |
| 2026-08-10 | The Communications Authority of Thailand (CAT) | TH | Carrier | 39 |
| 2026-08-09 | The Communications Authority of Thailand (CAT) | TH | Carrier | 39 |
| 2026-08-08 | The Communications Authority of Thailand (CAT) | TH | Carrier | 39 |
| 2026-08-07 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-08-06 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-08-05 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-08-04 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-08-03 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-08-02 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-08-01 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-31 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-30 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-29 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-28 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-27 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-26 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-25 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-24 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-23 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-22 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-21 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-20 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-19 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-18 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-17 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-16 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-15 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-14 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-13 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-12 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-11 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-10 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-09 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-08 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-07 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-06 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-05 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-04 | The Communications Authority of Thailand (CAT) | TH | Carrier | 38 |
| 2026-07-03 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-07-02 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-07-01 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-06-30 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-06-29 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-06-28 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-06-27 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-06-26 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-06-25 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-06-24 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-06-23 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-06-22 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-06-21 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-06-20 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-06-19 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-06-18 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-06-17 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-06-16 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-06-15 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-06-14 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
| 2026-06-13 | The Communications Authority of Thailand (CAT) | TH | Carrier | 37 |
IP-block changes
Open full filtered history →| Observed | Block | Action | Previous origins | New origins |
|---|---|---|---|---|
| 2026-11-11 | 2001:c38::/32 | Released | AS4651 | — |
| 2026-11-11 | 2001:c38:5002::/48 | Released | AS4651 | — |
| 2026-10-14 | 2001:c38::/32 | Acquired | — | AS4651 |
| 2026-10-14 | 2001:c38:5002::/48 | Acquired | — | AS4651 |
| 2026-10-13 | 2001:c38::/32 | Released | AS4651 | — |
| 2026-10-13 | 2001:c38:5002::/48 | Released | AS4651 | — |
| 2026-10-11 | 2001:c38::/32 | Acquired | — | AS4651 |
| 2026-10-11 | 2001:c38:5002::/48 | Acquired | — | AS4651 |
| 2026-10-10 | 2001:c38::/32 | Released | AS4651 | — |
| 2026-10-10 | 2001:c38:5002::/48 | Released | AS4651 | — |
| 2026-10-08 | 2001:c38::/32 | Acquired | — | AS4651 |
| 2026-10-08 | 2001:c38:5002::/48 | Acquired | — | AS4651 |
| 2026-10-07 | 2001:c38::/32 | Released | AS4651 | — |
| 2026-10-07 | 2001:c38:5002::/48 | Released | AS4651 | — |
| 2026-09-11 | 2001:c38::/32 | Acquired | — | AS4651 |
| 2026-09-11 | 2001:c38:5002::/48 | Acquired | — | AS4651 |
| 2026-09-10 | 2001:c38::/32 | Released | AS4651 | — |
| 2026-09-10 | 2001:c38:5002::/48 | Released | AS4651 | — |
| 2026-08-22 | 122.155.228.0/24 | Released | AS4651 | — |
| 2026-08-15 | 2001:c38::/32 | Acquired | — | AS4651 |
| 2026-08-15 | 2001:c38:5002::/48 | Acquired | — | AS4651 |
| 2026-08-08 | 122.155.239.0/24 | Acquired | — | AS4651 |
| 2026-07-04 | 122.155.242.0/24 | Acquired | — | AS4651 |
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