AS21859 ZEN-ECN - Zenlayer Inc
🇺🇸ARINassigned
Announced Prefixes (BGP)
2,004total
1,833 IPv4171 IPv6
IPv4 Addresses
Allocated (RIR)399,872
Announced (BGP)998,912
IPv6 Addresses
Allocated (RIR)4.6×10³⁰
Announced (BGP)7.2×10³⁰
Prefix Limit (IPv4)
5,000
Prefix Limit (IPv6)
1,000
Country
🇺🇸 USRIR
ARINStatus
assigned
Allocated
2013-04-02
Routing hygiene
Score 28/100 · Medium riskRPKI ROA coverage
67.4%
72 prefixes RPKI invalid
IRR route objects
94%
114 prefixes registered for another origin
Hijack signals
45
28 announced against others' ROAs, 17 own announced by others
Upstreams
80
diversity 81/100
- 33% of announced prefixes (653 of 2003) have no valid ROA, 72 of them RPKI invalid
- Announces 28 prefixes that RPKI assigns to another network (possible hijack or misconfiguration)
- 31 prefixes registered in IRR route objects for another active network and not authorized by a ROA
Based on 2,003 announced prefixes, updated daily (2026-10-25). How the score works · RPKI explained
Listed on the threat map (2026-10-26)
Large hosting providers appear because attackers rent their servers, not necessarily because of the operator.
Announced Prefixes
(BGP)1,000 of 2,004|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| Valid | Other IRRRIPE | - | |
| Invalid | - | - | |
| Valid | Other IRRRIPE | - | |
| No ROA | Other IRR | - | |
| Valid | Other IRRRIPE | - | |
| Valid | ARINOther IRR | - | |
| Valid | Other IRR | - | |
| Valid | Other IRR | - | |
| Valid | Other IRR | - | |
| Valid | Other IRR | - |
1-10 of 1,000
1 / 100
Allocated Prefixes
(RIR)420Prefix | Country | RIR | Status |
|---|---|---|---|
| 2.27.161.0/24 | 🇪🇺 EU | RIPE | assigned |
| 5.180.232.0/24 | 🇭🇰 HK | RIPE | assigned |
| 5.252.82.0/24 | 🇪🇺 EU | RIPE | assigned |
| 14.102.227.0/24 | 🇨🇳 CN | RIPE | assigned |
| 23.139.252.0/24 | 🇺🇸 US | ARIN | allocated |
| 23.154.4.0/24 | 🇺🇸 US | ARIN | allocated |
| 23.154.44.0/24 | 🇺🇸 US | ARIN | allocated |
| 23.154.92.0/24 | 🇺🇸 US | ARIN | allocated |
| 23.236.112.0/20 | 🇺🇸 US | ARIN | allocated |
| 23.248.160.0/19 | 🇺🇸 US | ARIN | allocated |
1-10 of 420
1 / 42
All 2,004 announced prefixes of AS21859 →
Downstream Customers(8)
| ASN | Name |
|---|---|
| AS44578 | 🇦🇪ITGLOBALCOM-DMCC ITGLOBAL COM DMCC |
| AS47583 | 🇨🇾AS-HOSTINGER Hostinger International Limited |
| AS135244 | KNET-AS - Kedia Internet Private Limited |
| AS138128 | SOLNET-ID - PT Solnet Indonesia |
| AS199180 | 🇦🇲LAGOM-NET Lagom Products LLC |
| AS200325 | 🇸🇮BunnyCDN BUNNYWAY, informacijske storitve d.o.o. |
| AS211575 | 🇨🇳RuiNetwork Rui Feng |
| AS402336 | 🇺🇸CHICFINDS - CHICFINDS |
BGP Neighbours
(seen in AS paths)Upstreams (82)
Networks AS21859 hands its own prefixes to: transit providers, or peers at an exchange.
- AS4229Zenlayer841
- AS2914NTT America99
- AS1299TWELVE99 Arelion Sweden AB88
- AS6461Zayo Bandwidth74
- AS18403FPT Telecom Company57
- AS38082True International Gateway56
- AS174Cogent Communications55
- AS3257GTT BACKBONE GTT Communications53
- AS7195EDGEUNO S.A.S52
- AS9498BHARTI Airtel45
- AS3462Data Communication Business Group38
- AS9299Philippine Long Distance Telephone Company35
- AS40850UPIX NETWORKS INTERNATIONAL34
- AS8529OMANTEL Zain Omantel International FZ32
- AS4788TM TECHNOLOGY SERVICES SDN. BHD29
- AS6762SEABONE NET TELECOM ITALIA SPARKLE S.P.A21
- AS20764RASCOM CJSC RASCOM18
- AS21245Medianova INTERNET HIZMETLERI VE TICARET ANONIM SIRKETI18
- AS12389ROSTELECOM PJSC Rostelecom17
- AS4809China Telecom Next Generation Carrier Network16
- AS3216SOVAM PJSC "Vimpelcom"15
- AS9457DREAMLINE15
- AS3356Level 3 Parent14
- AS8966Etisalat EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC14
- AS9260Multinet Pakistan Pvt14
- AS199524GCORE G Core Labs S.A14
- AS6774ASN BICS Belgacom International Carrier Services13
- AS639565G NETWORK OPERATIONS PTY13
- AS48237MOBILY Etihad Etisalat, A Joint Stock Company12
- AS135905VIETNAM POSTS AND TELECOMMUNICATIONS GROUP10
- AS1221Telstra Limited9
- AS4775Globe Telecoms9
- AS6204ZET NET INTERKVM HOST9
- AS9381HKBN Enterprise Solutions HK Limited9
- AS30844LIQUID Telecommunications9
- AS38193Transworld Associates (Pvt.)9
- AS8452IDDQD8
- AS33891CORE BACKBONE Core Backbone8
- AS136255Telecom International Myanmar8
- AS17494Telecom Operator & Internet Service Provider Well7
- AS24203PT XL Axiata7
- AS29752Zenlayer7
- AS39386STC IGW Saudi Telecom Company JSC7
- AS17557Pakistan Telecommunication Company Limited6
- AS49544I3Dnet I3D.Net B.V6
- AS4755TATA Communications Formerly VSNL Is Leading ISP5
- AS6939Hurricane Electric5
- AS7552Viettel Group5
- AS12956TELXIUS TELEFONICA GLOBAL SOLUTIONS SL5
- AS37662West Indian Ocean Cable Company West Indian Ocean Cable Company5
- AS6453TATA COMMUNICATIONS (AMERICA)4
- AS8359MTS PJSC4
- AS8781QA ISP Ooredoo Q.S.C4
- AS18734Operbes, S.A. De C.V4
- AS24429Zhejiang Taobao Network4
- AS47589KTC3G Kuwait Telecommunications Company K.S.C.C4
- AS198803ALLONS Alonstelefonstroy LLP4
- AS4613Mercantile Office Systems3
- AS12365SARKOR JC Sarkor Telecom3
- AS30600Metronet3
- AS55410Vodafone Idea3
- AS912Hut 8 Mining2
- AS1031PEER 10312
- AS6205HizliNet Teknoloji A.S2
- AS8551BEZEQ INTERNATIONAL Bezeq International2
- AS13335Cloudflare2
- AS39120CONVERGENZE S.P.A2
- AS54994Meteverse Limited2
- AS131628Tai Fu Cloud2
- AS137409GSL Networks Pty2
- AS139341ACE2
- AS14537Continent 81
- AS15412FLAG Telecom UK Limited1
- AS18678INTERNEXA S.A. E.S.P1
- AS19151BroadbandONE1
- AS20080Florida International University1
- AS24940HETZNER Online1
- AS37271Workonline Communications(Pty) Workonline Communications(Pty)1
- AS41095IPTP1
- AS56665TANGO PROXIMUS NXT Proximus Luxembourg S.A1
- AS200612GulfBridgeInternational Gulf Bridge International1
- AS262589SAMM TECNOLOGIA E TELECOMUNICACOES S.A1
Downstreams (100 of 223)
Networks whose own prefixes AS21859 passes on: usually its customers.
- AS62610Zenlayer331
- AS979NetLab Global246
- AS154049EXA TECH PTE234
- AS135377UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED219
- AS5065Bunny Communications137
- AS152179GLOBAL COMMUNICATION NETWORK LIMITED113
- AS26658HT94
- AS45102Alibaba (US) Technology57
- AS214143Skydigital Telecom SKYDIGITAL TELECOM57
- AS142002Scloud Pte49
- AS139057Edgenext Legend Dynasty Pte48
- AS401783TOKALA COMMUNICATIONS42
- AS395793Arisk Communications40
- AS984OCTOPUS WEB SOLUTION39
- AS7346Springtide Communications35
- AS38553DC Tech Micro Services35
- AS136744DREAM POWER TECHNOLOGY LIMITED34
- AS138152YISU CLOUD34
- AS400866Harmony Networks33
- AS30103Zoom Video Communications29
- AS396986Bytedance28
- AS32043NeoFiber Communications27
- AS40861Paradise Networks27
- AS150436Byteplus Pte27
- AS213607WORLD FIRST COMMUNICATION WORLD FIRST COMMUNICATION27
- AS38854Zenlayer22
- AS54113Fastly22
- AS62468VpsQuan L.L.C22
- AS63199CDS Global Cloud21
- AS132203Tencent Building, Kejizhongyi Avenue21
- AS138995Antbox Networks Limited20
- AS154107DigitalLink Global Network Limited20
- AS27418OUTOFWALL18
- AS137280Kingsoft Cloud Corporation Limited18
- AS18530Isomedia17
- AS135356GOIP Secunet Limited17
- AS151373JAPAN 3D PRINTER16
- AS138571SUPERCLOUDS LIMITED15
- AS393889EightJoy Network15
- AS147040NEBULA SYSTEMS SDN BHD14
- AS199707XINGTONGHUI HONGKONG XING TONG HUI TECHNOLOGY ., LIMITED14
- AS24173Netnam Company13
- AS51082ISP A1 Internet SPUZE13
- AS63099MADEALA TELECOM TECHNOLOGY MADEALA TELECOM TECHNOLOGY13
- AS131618Carl International Information13
- AS151397China Telecom13
- AS401322NetO13
- AS402671Frontier13
- AS13444TRS12
- AS18464ALVIDI TECHNOLOGY12
- AS132139VECLOUD LIMITED12
- AS393437KLAYER12
- AS14593Space Exploration Technologies Corporation11
- AS24151China Internet Network Infomation Center11
- AS207550OCLAYER LIMITED11
- AS402899Prestige11
- AS39600BUNNY TECHNOLOGY10
- AS44444Forcepoint Cloud Forcepoint UK Limited10
- AS45903CMC Telecom Infrastructure Company10
- AS52129PROOFPOINT ASN EU Proofpoint10
- AS139811ANLIAN NETWORK TECHNOLOGY ., LIMITED10
- AS142622Dream Information Laboratory10
- AS202736WISDOM CLOUD INTERNET TECHNOLOGY PTE10
- AS7536Chiaochiao9
- AS24409China Internet Network Infomation Center9
- AS148996GLOBAL COMMUNICATION NETWORK LIMITED9
- AS151196JunYun Limited9
- AS198475SAPPOC MEDIA LIMITED9
- AS1054Zont8
- AS44578ITGLOBALCOM DMCC ITGLOBAL COM DMCC8
- AS47583HOSTINGER International Limited8
- AS55256Netskope8
- AS132825MYTEK TRADING PTY8
- AS218910ASHORE LIMITED ASHORE LIMITED8
- AS398993PEG TECH8
- AS24406China Internet Network Infomation Center7
- AS38090Pearlabyss6
- AS63593HeyTap PTE6
- AS133012Cocoa Oriental Network Limited6
- AS133929TWOWIN ., LIMITED6
- AS141180HUAWEI INTERNATIONAL PTE6
- AS213734ZERODESK6
- AS214266ZERODESK6
- AS402394Vuedge6
- AS7361DataZone Networks5
- AS18187Ignite Telecommunications5
- AS6398143/F, AIA Tower, 183 Electric Road, North Point, Hong Kong5
- AS134829PPIP Associated Communication Limited5
- AS134835Starry Network Limited5
- AS137969HONG KONG BRIDGE INFO TECH LIMITED5
- AS149042Silicon Cloud Global (US)5
- AS209557GEELINX5
- AS215778ALPHASTRIKE HK Alpha Strike Labs5
- AS402187AANSys Network5
- AS7483Skycloud Computing4
- AS32590Valve Corporation4
- AS41717TelflyNetwork Telfly Technology Limited4
- AS42969ALPHASTRIKE Alpha Strike Labs4
- AS63793Japan OPS Better4
- AS133199SonderCloud Limited4
Other adjacent networks (26)
Adjacent to AS21859 in the transit part of AS paths: peers, providers or customers.
- AS24482SG.GS200
- AS9516SAKURA LINK LIMITED35
- AS23947PT.Mora Telematika Indonesia22
- AS9002RETN Limited16
- AS4637Telstra Global11
- AS9957KINX6
- AS45896Mobifone Global JSC5
- AS32098Transtelco4
- AS8220COLT Technology Services Group Limited3
- AS35280F5 Networks SARL3
- AS137991Lifeway Singapore Pte3
- AS2516KDDI CORPORATION2
- AS28458IENTC S DE RL DE CV2
- AS153259Edgerede Private Limited2
- AS6663TTI NET Euroweb Romania S.R.L1
- AS6797GLOBALCONNECT NET GlobalConnect AB1
- AS7713PT Telekomunikasi Indonesia1
- AS9848SEJONG NETWORKS1
- AS23764CTGNet1
- AS34549MEER Meerfarbig & . KG1
- AS37282Main One Cable Company Nigeria Limited Main One Cable Company Nigeria Limited1
- AS37468Angola Cables Angola Cables1
- AS43766MTC KSA Mobile Telecommunication Company Saudi Arabia Joint Stock Company1
- AS138997Eons Data Communications Limited1
- AS150706Hong Kong Zhengxing Technology1
- AS151326DCConnect Communication Pte1
External Links
Learn more
- What is an ASN?Autonomous systems, ASN ranges and how they are assigned
- RPKI and route origin validationWhat the RPKI badges on the prefix list mean
- How to run an ASPA checkVerify the upstream providers listed above
- IPv4 transfers in the ARIN regionMonthly volume and the latest registry transfers
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/21859Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/21859" | jq