AS21859 Zenlayer Inc — ASN Info Lookup

AS21859Zenlayer IncIDC

WHOIS Topology

United States · ARINzenlayer.com

Hosts top sitesAnycastCDNDDoS mitigationTor relaysVPN servicesVPS hosting

IPv4 addresses

728,064

1,736 announced prefixes

IPv6 addresses

7.20 × 10³⁰

167 announced prefixes

BGP neighbours

…

CAIDA rank

#122

Customer cone 473 ASNs

Estimated users

841K

APNIC Labs estimate

RPKI

69% valid

22 invalid · 563 not covered

Average purity

1,781 sampled IPs

IXPs / facilities

81 / 109

Operator self-reported

History

How prefixes were announced and changed hands, registration changes, and outage or hijack incidents.

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IP ranges

Currently announced prefixes with their RIR registration and geolocation.

Prefix	RPKI	Registration	Geolocation	Addresses
128.1.0.0/16	Valid	—	United States	65,536
128.14.0.0/16	Valid	—	Los Angeles	65,536
128.14.0.0/17	Valid	—	Los Angeles	32,768
129.227.128.0/17	Not found	ZEN-SGAPNIC	Hong KongCross-border	32,768
107.151.128.0/18	Valid	—	Los Angeles	16,384
107.155.0.0/18	Valid	—	Los Angeles	16,384
23.248.160.0/19	Valid	—	Seoul	8,192
23.251.96.0/19	Valid	—	Los Angeles	8,192
128.14.128.0/19	Valid	—	Los Angeles	8,192
129.227.64.0/19	Not found	ZEN-SGAPNIC	Singapore	8,192
129.227.192.0/19	Not found	ZEN-SGAPNIC	MumbaiCross-border	8,192
193.118.32.0/19	Valid	US-ZENLAYER-940210RIPE	LondonCross-border	8,192
193.118.96.0/19	Valid	US-ZENLAYER-940210RIPE	United StatesCross-border	8,192
23.90.128.0/20	Valid	US-ZENLAYER-20130816RIPE	MoscowCross-border	4,096
23.90.144.0/20	Valid	US-ZENLAYER-20130816RIPE	Frankfurt am MainCross-border	4,096
23.236.112.0/20	Valid	—	Frankfurt am Main	4,096
38.183.160.0/20	Not found	—	United States	4,096
65.255.32.0/20	Valid	—	Jakarta	4,096
69.28.48.0/20	Valid	—	Los Angeles	4,096
128.14.192.0/20	Valid	—	Ashburn	4,096

Only the first 500 prefixes are listed; address counts and geography use all prefixes.

/24 block profile

One square per /24: colour shows the risk type, shade how many addresses are flagged, stripes mark datacenter blocks. Click a square to see all 256 addresses.

/24s with data 676 / 2,844 （24%） · flagged 517

No risk flagsDatacenter (no flags)ProxyVPNAbuse / blocklistTorDarker = more flagged addresses; dashed = block screen only

128.14.0.0/1649/256 with data · 33 flagged

128.1.0.0/1647/256 with data · 32 flagged

129.227.128.0/1715/128 with data · 8 flagged

129.227.64.0/1912/32 with data · 8 flagged

107.155.0.0/1810/64 with data · 5 flagged

107.151.128.0/189/64 with data · 7 flagged

69.28.48.0/209/16 with data · 4 flagged

23.251.96.0/196/32 with data · 4 flagged

23.248.160.0/195/32 with data · 4 flagged

156.59.8.0/215/8 with data · 1 flagged

156.59.80.0/215/8 with data · 4 flagged

65.255.32.0/204/16 with data · 3 flagged

Hover a square for its numbers; click to see all 256 addresses.

Each prefix shows its 64 /24s with the most data. Built daily from lookups, neighbour sampling, public lists and block screening.

IP reputation

IPs from this network that CleanIP has analysed: purity, abuse reports and the riskiest /24 blocks.

Purity distribution

85–100 1270–84 1,30850–69 4110–49 50

1.47%

Share of IPv4 reported or blocklisted

9,866

Listed IPs

1,781

Analysed IPs

Riskiest /24 blocks

/24 block	Flagged	Analysed
45.133.176.0/24	8	18
107.151.188.0/24	7	14
129.227.235.0/24	6	38
192.169.119.0/24	5	13
23.248.176.0/24	4	23
69.165.77.0/24	4	8
122.10.198.0/24	3	12
38.183.161.0/24	3	11
129.227.118.0/24	3	6
156.59.127.0/24	3	5

Flagged = VPN, proxy, Tor or purity below 50. Samples come from user lookups and neighbour sampling, not every address in this network.

Geography

Where this network’s IPv4 addresses are located.

United States27.6%
Hong Kong9.9%
Singapore6.9%
Japan4.4%
India4.4%
Germany4.2%

Scope: Global
In registered country: 27.6%

Estimated by sampling IPv4 ranges against a geolocation database.

Traffic observation

AS21859 · Last 7 days

Mobile vs. Desktop

Desktop74.3%Mobile25.7%

Bot vs. Human

Human26.8%Bot73.2%

Adoption & Usage

Adoption and usage of key protocols

Internet Protocol (IP) Version

IPv495.1%IPv64.9%

HTTP Version

HTTP/1.x

35.9%HTTP/2

48.5%HTTP/3

15.6%

HTTP vs. HTTPS

94.3% HTTPS (encrypted)

Plain HTTP 5.7%

TLS Version

TLS 1.0/1.1< 0.1%TLS 1.218.0%TLS 1.365.5%QUIC16.5%

Security & Attacks

Insights into network and application layer attack traffic

Layer 7 Attacks

GET

86.4%POST

12.6%HEAD

0.6%OPTIONS

0.2%Other

< 0.1%

BGP Announcements

Hourly BGP route announcements over the last 7 days

33,316,593

7-day total

898,762

Hourly peak

Data: Cloudflare Radar, licensed under CC BY-NC 4.0

Activity

Hourly traffic over the last 7 days, normalized to this network’s peak.

Fairly flat around the clock, typical of server or hosting networks.

	00						06						12						18
Mon
Tue
Wed
Thu
Fri
Sat
Sun

Times in UTCLessMore

Peak hour: 15:00–16:00
Active hours: 24 hrs
Weekend vs weekday: Weekdays heavier
Busiest day: Wed

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BGP upstreams and neighbours

AS21859Standalone page

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WHOIS record

The registry’s record for this AS number: holder, status, dates and contacts.

Sources

Where the information on this page comes from and when it was updated.

Information	Source	Updated
Registered country	RIR daily delegation statistics	2026-10-20
Registered address & allocation date	RIR registration data (RDAP)	2026-09-26
Organization & company country	AS-to-organization data	2026-10-21
Network type	CleanIP ASN canon	2026-10-22
Exchanges & facilities	Operator self-reported interconnection data	2026-10-21
Announced prefixes & BGP neighbours	Public BGP routing data	2026-10-22
IPv4 geography	Geolocation database	—
RPKI validation	RPKI ROA validation data	2026-10-22
Rank & customer cone	CAIDA AS Rank	2026-10-01
Estimated users (APNIC)	APNIC Labs user estimates	2026-10-19
Network tags	Public routing data community tags	2026-10-22
IP reputation	CleanIP lookups and neighbour sampling	—

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Multi-source cross-checks · In-house reputation data · Real data only