Overview
Zenlayer operates a hosting network associated with AS21859.
This record includes the representative IPv4 CIDR 23.90.128.0/20. It is not an exhaustive list of the network’s address space or current routing announcements.
This is a network-origin record, not an exact physical-facility location or proof that a request is automated. Evaluate the ASN and CIDR together with the User-Agent, request path, request rate, session behavior, and application context before enforcement.
Network prefixes
These are documented prefixes associated with this routed network. They are not necessarily the network’s complete current address space.
- Representative prefix
-
23.90.128.0/20
IPv4 · Active · RPKI Valid · checked 2026-08-07
Provider and network
- Network / Provider Name
- Zenlayer
- Registered / Operating Organization
- Zenlayer Inc
- ISP / Network Operator
- Zenlayer Inc
- ASN
-
AS21859 - ASN Name
- ZEN-ECN
- Network Name
- ZEN-ECN
- Current Services
- Edge cloud, bare metal, global acceleration, connectivity, and application hosting
- Provider Type
- Hosting
- Network Type
- Cloud hosting
Network scope
- Network Country
- US
Traffic and handling
- Traffic Classification
- Cloud / Hosting Network Traffic
- Traffic Label
- Cloud / Hosting Network
- Risk Level
- Medium
- Recommended Action
- Log by default. Rate-limit or block only when behavior indicates abusive automation, scanning, scraping, credential attacks, or policy violations.
- Default Rule Action
- Log
- Common Pattern
- Traffic often appears as server, VPS, cloud, shared-hosting, dedicated-hosting, proxy, crawler, scanner, or automated application traffic.
- Detection Notes
- Match AS21859 and representative CIDR 23.90.128.0/20, then correlate the network identity with the User-Agent, request path, request rate, session behavior, and rule outcomes before enforcement.
Relationships
- Operator
- Zenlayer Inc Evidence Checked 2026-08-07