| 2001:b000::/20 | WHOIS (APNIC) | Asia Pacific Network Information Center, Pty. Ltd. | AU |
| 2001:b000::/21 | WHOIS (APNIC) | HiNet Taiwan | TW |
| 2001:b000::/21 | APNIC assigned | — | TW |
| 2001:b800::/21 | APNIC reserved | — | ZZ |
| 2001:b400::/23 | BGP route | AS17421 Data Communication Business Group, | — |
| 2001:b040::/26 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b020::/27 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b010::/28 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b001::/32 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b200::/32 | BGP route | AS9505 Chunghwa Telecom Co., Ltd. | — |
| 2001:b200:2000::/35 | BGP route | AS9505 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:2000::/36 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:8000::/36 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b030:2000::/36 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b030:8000::/36 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b031:2000::/36 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b031:8000::/36 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b032:2000::/36 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b032:8000::/36 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b400:e000::/36 | BGP route | AS17421 Data Communication Business Group, | — |
| 2001:b011::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:1000::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:3000::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:3800::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:4000::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:6800::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:7000::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:c000::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b030::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b030:1000::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b030:7000::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b030:c000::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b031::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b031:1000::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b031:7000::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b031:c000::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b032::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b032:3000::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b032:3800::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b032:7000::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b032:c000::/37 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b000:400::/38 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:5c00::/38 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:7c00::/38 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:7800::/38 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:9800::/38 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:a400::/38 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:b000::/38 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:b800::/38 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:bc00::/38 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:d000::/38 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:d800::/38 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b011:e000::/38 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |
| 2001:b030:5c00::/38 | BGP route | AS3462 Chunghwa Telecom Co., Ltd. | — |