AS4808China Unicom Beijing Province Network
As of 26th September 2026, AS4808 (China Unicom Beijing Province Network), an access network registered in China with APNIC, originates 1,521 IPv4 prefixes covering 14M addresses and 933 IPv6 prefixes. By IPv4 address space that makes it the 51st-largest of the 79,480 networks we see originating IPv4, and the 6th-largest of 607 in China. It is seen behind 2 upstream networks, most often AS4837 (China Unicom Backbone) and AS9929 (China Unicom Industrial Internet…), and in front of 68 downstream networks. 94% of its announcements have a valid RPKI ROA; 7 are RPKI-invalid. 85% of its routes reach at least 90% of full-feed peers, and 356 prefixes are also originated by another network.
At a glance
IPv4 prefixes
IPv6 prefixes
IPv4 addresses
IPv6 /64s
Upstream graph
The networks AS4808 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS4808 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
157
adjacent networks
- Upstreams
- 21%
- Peers
- 8755%
- Downstreams
- 6843%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS4837China Unicom Backbone | Peer | 173,537 | 144 | |
| AS9929China Unicom Industrial Internet Backbone | Peer | 3,413 | 144 |
Prefixes
All 2,454The largest blocks AS4808 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 221.216.0.0/13 | 524k | 80/81 |
| 222.128.0.0/14 | 262k | 81/81 |
| 61.148.0.0/15 | 131k | 81/81 |
| 61.48.0.0/16 | 65.5k | 81/81 |
| 61.49.0.0/16 | 65.5k | 81/81 |
| 61.50.0.0/16 | 65.5k | 81/81 |
| 61.51.0.0/16 | 65.5k | 81/81 |
| 61.148.0.0/16 | 65.5k | 81/81 |
| 61.149.0.0/16 | 65.5k | 81/81 |
| 111.192.0.0/16 | 65.5k | 81/81 |
Routing health
How AS4808'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
- Valid93.6%2,297
- Invalid0.3%7
- No ROA6.1%150
Propagation
- Globally propagated90% of full-feed peers or more85.0%2,086
- Partially propagated40% to 90%0.7%16
- Seen by few peersUnder 40%14.3%352
Prefix sizes
IPv4 — 1,521 prefixes
IPv6 — 933 prefixes
- /324.3B × /640.1%1
- /341.1B × /6410.7%100
- /36268M × /640.3%3
- /4016.8M × /640.2%2
- /441M × /6484.8%791
- /4865.5k × /643.9%36
Recent changes
Announcements that started or stopped since 27th Aug 2026.
- Announced139.220.192.0/2424th Sept 2026
- Announced139.220.193.0/2424th Sept 2026
- Announced139.220.194.0/2424th Sept 2026
- Announced139.220.195.0/2424th Sept 2026
- Announced139.220.240.0/2424th Sept 2026
- Announced139.220.241.0/2424th Sept 2026
- Announced139.220.242.0/2424th Sept 2026
- Announced139.220.243.0/2424th Sept 2026
- Announced54.222.100.0/2424th Sept 2026
- Announced54.222.101.0/2424th Sept 2026
- Announced54.222.102.0/2424th Sept 2026
- Announced54.222.103.0/2424th Sept 2026
50 announced and 9 withdrawn in all; the most recent are shown.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.