AS11878 — TZULO
Network type: hosting
AS11878 announces 50 IPv4 prefixes covering 114,944 addresses and 4 IPv6 prefixes.
About this network
TZULO is tzulo, inc., a Chicago-based dedicated-server, colocation and cloud hosting provider that has been trading since the early 2000s and runs its own network out of Chicago and Los Angeles facilities. This is a hosting network, and the routing evidence says so plainly.
What it's used for
Server hosting. RIS sees 195 IPv4 prefixes totalling about 114,688 addresses plus 33 IPv6 prefixes, against only 9 observed neighbours. That ratio is the tell: a wholesale carrier of this address size would peer with hundreds of ASes. Nine upstreams and a large, heavily fragmented address pool is a content-and-servers network buying transit, not selling it. Every reverse-DNS name sampled follows the same first-party template, static-<ip>.cust.tzulo.com, which is a hosting provider's default naming for customer static assignments.
Notable
- The prefix registrations look scattered at first glance: alongside blocks registered to tzulo itself, RDAP returns small LLCs and individual people as the registered orgs of /24s that tzulo announces. Read against the rest of the evidence this is the IPv4 leasing market, not brokered proxy space. tzulo is a real, findable business with public facilities and pricing, and the leased-in blocks wear tzulo's own cust.tzulo.com reverse DNS rather than a stranger's.
- The fragmentation is worth understanding for anyone geolocating an address here: the space was assembled from many small acquisitions and transfers over time, so neighbouring /24s can have very different registration histories.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 23.158.232.0/23
- 23.234.64.0/19
- 23.234.96.0/20
- 23.234.112.0/21
- 23.234.120.0/22
- 23.255.0.0/17
- 37.202.204.0/24
- 64.112.97.0/24
- 68.235.32.0/23
- 68.235.35.0/24
- 68.235.36.0/22
- 68.235.40.0/21
- 68.235.48.0/23
- 68.235.50.0/24
- 68.235.52.0/24
- 68.235.56.0/23
- 68.235.59.0/24
- 68.235.60.0/22
- 82.26.166.0/24
- 85.209.19.0/24
- 107.152.32.0/20
- 130.12.72.0/22
- 130.12.190.0/24
- 130.51.20.0/22
- 162.212.152.0/21
- 172.93.184.0/24
- 173.249.192.0/20
- 173.249.208.0/23
- 173.249.210.0/24
- 173.249.212.0/24
- 173.249.214.0/23
- 173.249.216.0/23
- 173.249.219.0/24
- 173.249.220.0/22
- 173.249.252.0/22
- 173.253.0.0/17
- 185.130.60.0/24
- 198.44.128.0/21
- 198.44.136.0/22
- 198.44.140.0/23
- 198.44.142.0/24
- 198.44.153.0/24
- 198.44.154.0/24
- 198.44.157.0/24
- 198.44.159.0/24
- 198.54.128.0/21
- 208.77.16.0/24
- 208.77.18.0/23
- 208.77.20.0/23
- 208.77.22.0/24
- 2607:1e40::/47
- 2607:2780::/48
- 2607:5d40::/35
- 2607:9000::/32
Upstream networks
- AS6461 Zayo Bandwidth
- AS36236 NetActuate, Inc
- AS3491 PCCW Global (HK) Ltd.
- AS6079 RCN
- AS6830 Liberty Global Europe Holding B.V.
- AS46844 Sharktech
- AS32097 WholeSale Internet, Inc.
- AS53745 Nordklett Inc.
Downstream networks
Adjacent networks
awaiting query
enter an AS number, IP address, or organisation name above