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AS21859
AS21859 Zenlayer Inc
ZEN-ECN - Zenlayer Inc · registered in the United States
IPv4 addresses 667,136 992 prefixes · 0.021% of announced IPv4
Rank in United States #138 largest network in US by IPv4 space, of 18,338 · 0.05% of US
Rank worldwide #471 of 79,396 networks with IPv4
IPv6 90 x /32 (5,958,768 x /48) 168 prefixes
Other ASNs named Zenlayer Inc
4 other networks use the same organisation name; together with AS21859 they announce 764,416 IPv4 addresses.
ASN Name IPv4 addresses
AS62610 ZEN-DPS - Zenlayer Inc US 82,944
AS4229 ZEN-NET - Zenlayer Inc US 7,680
AS29752 ZEN-SDN - Zenlayer Inc US 6,400
Similar-sized networks in United States
ASN Name IPv4 addresses
AS3737 #135 AS-PTD - PenTeleData Inc.686,592
AS8011 #136 MONGO-8011 - MongoDB, Inc.679,936
AS46375 #137 AS-SONICTELECOM - Sonic Telecom LLC673,280
AS22516 #139 CHARTER-22516-CENTRAL-CA-C3 - Charter Communications LLC665,088
AS22258 #140 COMCAST-22258 - Comcast Cable Communications, LLC664,064
AS31822 #141 CITY-UNIVERSITY-OF-NEW-YORK - City University of New York659,712
IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources