AS137697China Telecom Yangzhou IDC Network
ChinaRegistryAPNICAs of 27th September 2026, AS137697 (China Telecom Yangzhou IDC Network), a network registered in China with APNIC, originates 203 IPv4 prefixes covering 88.3k addresses and 6 IPv6 prefixes. By IPv4 address space that makes it the 2,587th-largest of the 79,523 networks we see originating IPv4, and the 139th-largest of 607 in China. It is seen behind 2 upstream networks, most often AS4134 (China Telecom Backbone) and AS23650 (China Telecom Jiangsu Province IDC…). Over 99% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. Over 99% of its routes reach at least 90% of full-feed peers, and 2 prefixes are also originated by another network.
At a glance
IPv4 prefixes
IPv6 prefixes
IPv4 addresses
IPv6 /64s
Upstream graph
The networks AS137697 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS137697 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.
Neighbouring networks
4
adjacent networks
- Upstreams
- 250%
- Peers
- 250%
- Downstreams
- 00%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS4134China Telecom Backbone | CN | Peer | 16,569 | 144 |
| AS23650China Telecom Jiangsu Province IDC Network | CN | Peer | 144 | 144 |
Prefixes
All 209The largest blocks AS137697 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 117.91.176.0/20 | 4.1k | 81/81 |
| 140.210.16.0/20 | 4.1k | 81/81 |
| 49.71.72.0/21 | 2k | 81/81 |
| 106.48.16.0/21 | 2k | 81/81 |
| 43.242.196.0/22 | 1k | 81/81 |
| 43.254.192.0/22 | 1k | 81/81 |
| 45.113.200.0/22 | 1k | 81/81 |
| 45.117.8.0/22 | 1k | 81/81 |
| 45.120.100.0/22 | 1k | 81/81 |
| 45.248.8.0/22 | 1k | 31/81 |
Routing health
How AS137697's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.
RPKI origin validation
- Valid99.5%208
- Invalid0.0%0
- No ROA0.5%1
Propagation
- Globally propagated90% of full-feed peers or more99.0%207
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%1.0%2
Prefix sizes
IPv4 — 203 prefixes
IPv6 — 6 prefixes
- /37134M × /6416.7%1
- /4016.8M × /6433.3%2
- /4865.5k × /6450.0%3
Recent changes
Announcements that started or stopped since 28th Aug 2026.
No announcement by AS137697 started or stopped in this period.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.