AS133775Xiamen
ChinaRegistryAPNICTypeEyeballAs of 27th September 2026, AS133775 (Xiamen), an access network registered in China with APNIC, originates 55 IPv4 prefixes covering 91.1k addresses and 33 IPv6 prefixes. By IPv4 address space that makes it the 2,538th-largest of the 79,525 networks we see originating IPv4, and the 137th-largest of 607 in China. It is seen behind 1 upstream network, most often AS4134 (China Telecom Backbone), and in front of 1 downstream network. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 52% of its routes reach at least 90% of full-feed peers, and 1 prefix is also originated by another network.
At a glance
IPv4 prefixes
IPv6 prefixes
IPv4 addresses
IPv6 /64s
Upstream graph
The networks AS133775 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS133775 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
- 125%
- Peers
- 250%
- Downstreams
- 125%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS4134China Telecom Backbone | CN | Peer | 3,386 | 144 |
Prefixes
All 88The largest blocks AS133775 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 27.148.160.0/19 | 8.2k | 1/81 |
| 117.25.128.0/19 | 8.2k | 1/81 |
| 27.159.64.0/20 | 4.1k | 1/81 |
| 101.251.160.0/20 | 4.1k | 8/81 |
| 110.80.128.0/20 | 4.1k | 1/81 |
| 110.88.128.0/20 | 4.1k | 1/81 |
| 117.31.112.0/20 | 4.1k | 1/81 |
| 120.39.160.0/20 | 4.1k | 1/81 |
| 120.41.32.0/20 | 4.1k | 1/81 |
| 218.98.112.0/20 | 4.1k | 8/81 |
Routing health
How AS133775'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
- Valid100.0%88
- Invalid0.0%0
- No ROA0.0%0
Propagation
- Globally propagated90% of full-feed peers or more52.3%46
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%47.7%42
Prefix sizes
IPv4 — 55 prefixes
IPv6 — 33 prefixes
- /37134M × /6421.2%7
- /3867.1M × /6412.1%4
- /3933.6M × /6424.2%8
- /4016.8M × /6415.2%5
- /418.4M × /643.0%1
- /424.2M × /646.1%2
- /4865.5k × /6418.2%6
Recent changes
Announcements that started or stopped since 28th Aug 2026.
No announcement by AS133775 started or stopped in this period.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.