BeiJing · China
PeeringDB records four exchanges in BeiJing. CNIX, the China Internet Exchange, is the best connected with 20 participants, ahead of CHN-IX Beijing with 7. Ten colocation facilities hold 15 network presences between them. An address that geolocates to BeiJing identifies the operator holding the block, not the position of a device.
Internet exchanges in BeiJing
An exchange is a shared switch where networks hand traffic to each other directly. Participant counts come from PeeringDB, where each network maintains its own record.
| Exchange | Participants | Registry carriers peering |
|---|---|---|
CNIX China Internet Exchange | 20 | none in the registry |
CHN-IX Beijing CHN-IX China Beijing | 7 | none in the registry |
CN-IX-BJ | 1 | none in the registry |
Cnean | 1 | none in the registry |
Exchange records: PeeringDB.
Colocation facilities
Buildings where networks put equipment. The network count is how many PeeringDB members list a presence there, which shows where capacity in the city sits.
| Facility | Networks present | Address |
|---|---|---|
| Capital Online Zhao Wei Datacenter | 2 | No. 14 Jiu Xian Qiao Road Chao Yang |
| BIH YIzhuang-T3-Beijing | 2 | No. 15,Flourishing street, Yizhuang economic and Technological Development Zone |
| Telehouse - Beijing BDA | 2 | Beijing Economical Development Area |
| Telehouse - Beijing BEZ | 2 | M5 Building, No1 Jiuxianqiao East Road, Chaoyang District |
| GDS Beijing | 2 | Jiachuang Rd. No.1 Tongzhou Campus |
| ChinaCache Atecsys Data Center | 1 | No. 8 Zhu Yuan 3rd Street Tianzhu Free Trade Zone, Shunyi District |
| Capital Online Yang Qiao Datacenter | 1 | No.106 Ma Jia Pu East Road Feng Tai |
| Capital Online Shang Di Datacenter | 1 | No.1 Shang Di East Road Hai Dian |
| Capital Online Ma Ju Qiao Datacenter | 1 | Jin Qiao Ke Ji Park, Ma Ju Qiao Tong Zhou |
| Jiuxianqiao-M7-Beijing | 1 | M7,No. 1 Jiuxianqiao Road Chaoyang District |
What a BeiJing IP address tells you
CNIX carries 20 of the 29 exchange participants PeeringDB records in BeiJing, and CHN-IX Beijing holds another 7, while CN-IX-BJ and Cnean list one apiece. Colocation capacity is spread rather than concentrated. Ten facilities hold 15 network presences between them, and no site records more than two networks, a count shared by Capital Online Zhao Wei Datacenter, BIH YIzhuang-T3-Beijing, GDS Beijing and both Telehouse addresses. None of the four exchanges lists a mobile ASN from China Mobile, China Telecom or China Unicom among its participants.
An address that geolocates to BeiJing is a registry fact before it is a physical one. An operator announces a block from whichever record it filed, and that record can name a head office or a national footprint rather than the building the traffic passes through. Mobile networks widen the gap, because handset traffic reaches the internet through a small number of gateways, so a phone connected far from BeiJing can still present a BeiJing address. Geolocation databases follow the operator's own published location, which is why they agree with each other and can still be wrong.
Someone checking a BeiJing address gets more from the origin ASN and the netname on the specific prefix than from a city label. The ASN names the network that announces the block, the netname shows how that network describes the range, and both come from the same registry the geolocation databases read. Comparing that ASN against the participant lists at CNIX and CHN-IX Beijing shows whether the network takes part in the city's exchange routing at all.
Mobile carriers in China
A mobile address in BeiJing is routed by one of the country's operators. Each entry lists the operator's ASNs, so you can check which network an address belongs to.
Questions
Which internet exchanges are in BeiJing?
PeeringDB lists four. CNIX, the China Internet Exchange, has 20 participants, CHN-IX Beijing has 7, and CN-IX-BJ and Cnean have one each. Together they account for the 29 participant records in the city, so CNIX carries roughly two thirds of the documented exchange peering.
Do Chinese mobile carriers peer in BeiJing?
Not in the data. None of the four BeiJing exchanges lists a mobile ASN belonging to China Mobile, China Telecom or China Unicom. Those operators run their own national backbones, and PeeringDB holds only what a network chooses to publish, so silence here is not proof of absence.
Does an IP that geolocates to BeiJing mean the device is there?
No. It means the block's registry record points at BeiJing. Mobile traffic in particular exits through a handful of gateways, so a connection can carry a BeiJing address while the handset is elsewhere in the country. The origin ASN and the prefix netname describe the address more accurately.
Sources
- PeeringDB - exchanges, participant counts, facilities and network presence, snapshot 2026-09-07
- PROXIES.SX carrier and ASN registry - operator ASNs used to match peering participants