TWD2 Education and Research Network
AS24239 is TWD2 Education and Research Network (twd2.net). It announces 0 IPv4 addresses in 0 prefixes, and 12 IPv6 prefixes.
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- TWD2-NET-AS-AP
- name
- TWD2 Education and Research Network
- org
- ORG-TEAR2-AP
- org name
- TWD2 Education and Research Network
- org address
- FIT 1-213, Tsinghua University, Beijing, China
- org country
- CN
- country
- CN
- source
- apnic
- updated
- 2023-09-05
- descr
- TWD2 Education and Research Network
- maintainer
- APNIC-HM
- maintainer email
- helpdesk@apnic.net
- abuse
- AT954-AP
- abuse name
- ABUSE TWD2
- abuse email
- twd2.me+abuse@gmail.com
- abuse kind
- role
- admin
- TNN4-AP
- admin name
- TWD2 Network NOC
- admin email
- twd2.me+abuse@gmail.com
- admin phone
- +8618411006610
- admin kind
- role
- admin country
- CN
- tech
- TNN4-AP
- tech name
- TWD2 Network NOC
- tech email
- twd2.me+abuse@gmail.com
- tech phone
- +8618411006610
- tech kind
- role
- tech country
- CN
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2404:f4c0:f000:: | China | Valid | 7 | 2026-10-02 |
| 2a0c:b641:571:: | Japan | Valid | 19 | 2026-10-02 |
| 2a0e:aa06:490:: | China | Valid | 18 | 2026-10-02 |
| 2a0e:aa06:490:: | China | Valid | 19 | 2026-10-02 |
| 2a0e:aa06:491:: | China | Valid | 19 | 2026-10-02 |
| 2a0e:aa06:492:: | China | Valid | 19 | 2026-10-02 |
| 2a0e:aa06:493:: | China | Valid | 19 | 2026-10-02 |
| 2a0e:aa06:494:: | China | Valid | 19 | 2026-10-02 |
| 2a0e:aa06:495:: | China | Valid | 19 | 2026-10-02 |
| 2a0e:aa06:496:: | China | Valid | 19 | 2026-10-02 |
| 2a0e:aa06:497:: | China | Valid | 19 | 2026-10-02 |
| 2a0e:aa06:49e:: | Japan | Valid | 19 | 2026-10-02 |
Test the real build first.
An evaluation license puts a full current build in your hands, with no sampling, so you can measure it against your own traffic before anyone talks about terms.