AS209300 Wende Tan 🇨🇳 CN
Announcing 6 prefixes, seen at the RIS collectors.
IPv4 prefixes
1
256 (1 × /24)
IPv6 prefixes
5
1 × /32
Upstreams
8
transit providers observed
Peers
1
settlement-free adjacencies
Downstreams
1
transit customers observed
Customer cone
0
ASes reachable through it
Registry and operator data
- AS number
- AS209300
- Name
- Wende Tan
- Organisation
- TWD2 Education and Research Network
- Country
- 🇨🇳 CN
- RIR
- RIPENCC
- Allocated
- 2019-03-01
- Network type
- Educational/Research
- Scope
- Not Disclosed
- Peering policy
- Open
- IRR as-set
- AS209300:AS-CUSTOMERS
- Website
- https://bgp.twd2.net
- PeeringDB
- net/19190
- Exchanges
- 2
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Upstreams
Networks seen providing transit to this one
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS20473 The Constant Company, LLC | 🇺🇸 US | 19,603 | 1,780 | 103 | CAIDA |
| AS29632 Netassist International EOOD | 🇧🇬 BG | 43 | 0 | 26 | inferred |
| AS8772 Netassist International EOOD | 🇧🇬 BG | 42 | 25 | 52 | inferred |
| AS58057 Securebit AG | 🇨🇭 CH | 20 | 13 | 1 | inferred |
| AS212683 Olilo UK & Ireland Ltd. | 🇬🇧 GB | 15 | 33 | 75 | CAIDA |
| AS142650 APNIC ASN block | 🇨🇳 CN | 0 | 0 | 33 | inferred |
| AS45576 Tsinghua University | 🇨🇳 CN | 0 | 0 | 23 | inferred |
| AS37989 DCS1 | 🇸🇬 SG | 0 | 2 | 1 | inferred |
Peers
Adjacencies that look settlement-free rather than transit
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS38255 China Education and Research Network (CERNET) | 🇨🇳 CN | 2 | 2 | 47 | inferred |
Downstreams
Networks this one appears to provide transit to
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS24239 TWD2 Education and Research Network | 🇨🇳 CN | 0 | 0 | 102 | inferred |
Relationships marked inferred come from where the two networks sit on the AS paths the collectors see, which is a guess and is wrong for some of them. The rest are stated by CAIDA's published inference over a much wider set of collectors.