asn.dev

Autonomous system

AS21859 ZEN-ECN

Hosting DROP-listed space ARIN

IPv4 addresses 668K 997 prefixes
IPv6 prefixes 168 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 68 recorded by PCH
Upstreams 128 215 downstream
Flagged prefixes 0 none

Summary

Zenlayer

United States (Global) · AI-generated

cloud edge hosting

A Zenlayer network (ZEN-ECN). Zenlayer is a global edge-cloud and bare-metal provider (US-headquartered, with a large Asia-Pacific footprint) offering compute, networking, and interconnection close to end users.

What it's used for

  • Edge compute, bare-metal servers, and global connectivity/CDN-style delivery, especially bridging traffic into and across Asia.

Notable

  • An IP here identifies Zenlayer as the host or edge provider, not the operator of whatever runs on it.
  • Zenlayer emphasizes low-latency edge locations in emerging markets where hyperscalers have thinner coverage.

Interesting

  • Zenlayer built out many edge points of presence across Southeast Asia, India, the Middle East, and Africa, positioning as an on-ramp to hard-to-reach regions.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

Recorded at 68 exchanges in 32 countries, largest first.

ExchangeLocationTheir address
IX.br (PTT.br) São PauloSão Paulo, Brazil187.16.222.18
DE-CIX FrankfurtFrankfurt, Germany80.81.193.187
Indonesian Internet Exchange (IIX-Jakarta)Jakarta, Indonesia123.108.9.167
IX.br (PTT.br) FortalezaFortaleza, Brazil45.68.74.128
LINX LON1London, United Kingdom195.66.225.229
Jakarta Internet ExchangeJakarta, Indonesia119.11.184.132
Neutral Internet ExchangeAmsterdam, Netherlands193.239.118.219
NAPAfrica IX JohannesburgJohannesburg, South Africa196.60.9.57

Transit providers

128 upstream, 215 downstream and 499 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS4229Zenlayer Inc38,579
AS6939Hurricane Electric LLC7,821
AS1299Arelion Sweden AB7,630
AS2914NTT America, Inc.5,593
AS3356Level 3 Parent, LLC3,657
AS174Cogent Communications, LLC3,577
AS3257GTT Communications Inc.2,293
AS38082True International Gateway Co., Ltd.2,114

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 997 prefixes · 668K addresses IPv6 168 prefixes

CountryNamePrefixes
USUnited States of America1,165

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS21859
Registry name
ZEN-ECN
Registrant
Zenlayer Inc
Abuse contact
abuse@zenlayer.com
Registered
2013-04-02
Last changed
2021-07-17
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
69% valid · 1,314 valid, 568 with no ROA 17 RPKI-invalid
ROAs
863 authorising AS21859
ASPA
no ASPA record
IRR
98% registered · 1,864 of 1,899 announcements 18 other origin
Route objects
2,914 naming AS21859

Reputation

Classification and threat

Hosting Datacenter or cloud provider. Addresses are servers, not people.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

5 DROP matches Announced space overlapping the DROP prefix list.

AnnouncedDROP entryRecord
98.98.192.0/2098.98.195.0/24SBL656003
103.39.110.0/24103.39.108.0/22SBL697967
172.247.38.0/23172.247.38.0/24SBL608973
199.241.0.0/21199.241.0.0/21SBL521778
204.115.128.0/21204.115.128.0/21SBL521782

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 431 networks and 1,775 prefixes, as published 2026-10-11. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check