AS21859 Zenlayer Inc
- Autonomous system number
- AS21859
- Registered in
- US
- Registry
- ARIN
- ASN registered
- 2013-04-02
- IPv4 prefixes announced
- 1,692
- IPv6 prefixes announced
- 163
- Internet exchanges
- 85
- Data centres
- 109
- Internet users (estimate)
- ~884,261
Prefix counts from the global routing table as of 2026-10-12. Not counted: 10 more prefixes this network originates that few routers see, inside address space AS3462, AS8851, AS9299, AS11404, AS398721 announces widely. Exchange and data-centre counts are what the network lists in PeeringDB. User estimate by APNIC Labs, 2026-10-06. Website: www.zenlayer.com
Cloud peering programs
Azure ExpressRoute connectivity provider: Microsoft lists Zenlayer (Connectivity provider) - expressroute peering locations: BOM, CGK, FRA, HKG, IAD, KUL, SIN. Checked 2026-10-08.
Source: ExpressRoute peering locations and connectivity partners, Microsoft Learn, licensed CC BY 4.0. Reformatted by BGPScout; the network and facility matches are ours.
Google Cloud Partner Interconnect provider: Google lists Zenlayer (Layer 2) - partner interconnect metros: BOM, CGK, FRA, GRU, HKG, IAD, KUL, LAX, NRT, SEA, SIN. Checked 2026-10-13.
Source: Supported service providers (Cloud Interconnect), Google Cloud documentation, licensed CC BY 4.0. Reformatted by BGPScout; the network and facility matches are ours.
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