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Autonomous System

AS135377 · UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED

Overview

AS135377 is announced on the Internet: RIPE RIS route collectors currently see 746 IPv4 prefixes and 14 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 194,048 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 22 upstream neighbours (transit providers or peers) and 32 downstream neighbours (customers or networks it carries). Its most visible upstreams are Zenlayer Inc (AS21859), Enjoyvc Cloud Group Limited. (AS136897), and CTCSCI TECH LIMITED (AS9886). AS135377 was assigned by APNIC, and its registration country is Hong Kong SAR China.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 7:01 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 107.150.96.1, the first address of 107.150.96.0/21. An address picked inside a prefix may not answer (nothing listens there, or the network filters probes): the trace then shows the path up to the last network that replies.

Announced prefixes

IPv4 prefixes (746 prefixes)

PrefixAddresses
23.91.96.0/24256
23.91.97.0/24256
23.91.98.0/24256
23.91.99.0/24256
23.91.100.0/24256
23.91.101.0/24256
23.236.126.0/24256
23.248.162.0/24256
23.248.163.0/24256
23.248.174.0/23512
23.248.184.0/24256
23.248.185.0/24256
36.255.220.0/24256
36.255.221.0/24256
36.255.222.0/24256
36.255.223.0/24256
42.240.250.0/24256
42.240.251.0/24256
42.240.253.0/24256
42.240.254.0/24256
43.224.65.0/24256
43.224.66.0/24256
43.224.67.0/24256
45.40.56.0/24256
45.40.57.0/24256
45.43.36.0/24256
45.43.37.0/24256
45.43.52.0/24256
45.43.53.0/24256
45.43.54.0/24256
45.43.55.0/24256
45.43.56.0/24256
45.43.57.0/24256
45.43.58.0/24256
45.43.59.0/24256
45.43.60.0/24256
45.43.61.0/24256
45.43.62.0/24256
45.43.63.0/24256
45.192.10.0/24256
45.192.11.0/24256
45.194.68.0/24256
45.194.70.0/24256
45.195.216.0/24256
45.195.217.0/24256
45.195.218.0/24256
45.195.219.0/24256
45.195.220.0/24256
45.195.221.0/24256
45.195.222.0/24256
45.195.223.0/24256
45.249.244.0/24256
45.249.245.0/24256
45.249.246.0/24256
45.249.247.0/24256
45.253.246.0/24256
45.255.124.0/24256
45.255.125.0/24256
45.255.133.0/24256
45.255.134.0/24256
45.255.135.0/24256
49.128.216.0/24256
61.29.241.0/24256
61.29.249.0/24256
61.29.251.0/24256
82.23.136.0/24256
82.23.137.0/24256
82.23.172.0/24256
82.24.21.0/24256
82.24.71.0/24256
101.36.96.0/24256
101.36.97.0/24256
101.36.98.0/24256
101.36.99.0/24256
101.36.100.0/24256
101.36.101.0/24256
101.36.102.0/24256
101.36.103.0/24256
101.36.104.0/24256
101.36.105.0/24256
101.36.106.0/24256
101.36.107.0/24256
101.36.108.0/24256
101.36.109.0/24256
101.36.110.0/24256
101.36.111.0/24256
101.36.112.0/24256
101.36.113.0/24256
101.36.114.0/24256
101.36.115.0/24256
101.36.116.0/24256
101.36.117.0/24256
101.36.118.0/24256
101.36.119.0/24256
101.36.120.0/24256
101.36.121.0/24256
101.36.122.0/24256
101.36.123.0/24256
101.36.124.0/24256
101.36.125.0/24256

Showing the first 100 of 746, in address order. Complete list on RIPEstat

IPv6 prefixes (14 prefixes)

Prefix
2404:82c0::/42
2404:82c0:40::/48
2404:82c0:41::/48
2404:82c0:42::/48
2404:82c0:43::/48
2404:82c0:44::/48
2404:82c0:45::/48
2404:82c0:46::/48
2404:82c0:49::/48
2404:82c0:4a::/48
2404:82c0:4b::/48
2404:82c0:4c::/48
2404:82c0:4e::/48
2404:82c0:4f::/48

Neighbours

Upstreams (transit or peers) (22)

ASNetworkVisibility
AS21859Zenlayer Inc20,108
AS136897Enjoyvc Cloud Group Limited.3,344
AS9886CTCSCI TECH LIMITED2,177
AS174Cogent Communications, LLC2,094
AS139327UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED1,949
AS153259Edgerede Private Limited1,378
AS1299Arelion Sweden AB1,090
AS135391AOFEI DATA INTERNATIONAL COMPANY LIMITED983
AS4229Zenlayer Inc745
AS32098Transtelco Inc590
AS3356Level 3 Parent, LLC570
AS13335Cloudflare, Inc.558
AS2497Internet Initiative Japan Inc.518
AS9002RETN Limited509
AS57304JSC "RetnNet"354
AS6939Hurricane Electric LLC227
AS9304HGC Global Communications Limited219
AS8966EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC41
AS20485Joint Stock Company TransTeleCom30
AS4635Hong Kong Internet Exchange--Route Server 16
AS8359MTS PJSC3
AS23764CTGNet1

Downstreams (customers) (32)

ASNetworkVisibility
AS63099TELECOM TECHNOLOGY - MADEALA TELECOM TECHNOLOGY INC3,038
AS214143SKYDIGITAL TELECOM LTD2,735
AS395793Arisk Communications inc.2,723
AS401783TOKALA COMMUNICATIONS INC.2,595
AS32043NeoFiber Communications inc.2,574
AS202036EXTREME COMMUNICATIONS TECHNOLOGY LIMITED1,333
AS48529quantumbeam Quantumbeam Communications Limited1,148
AS215748Westeros Westeros Communications (THAILAND) CO., LTD.913
AS39600BUNNY TECHNOLOGY LLC902
AS142002Scloud Pte Ltd585
AS139327UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED501
AS262663METROFLEX TELECOMUNICACOES LTDA327
AS268786LINE FIBRA TELECOM LTDA282
AS52924-281
AS264403-281
AS267157-281
AS267512-281
AS267959-281
AS268300-281
AS269011-281
AS52766Printnet telecomunicacoes280
AS262727AtualNet Provedor de Internet Ltda280
AS269704-280
AS270288-280
AS28572-278
AS402386-275
AS402363-273
AS402475-273
AS218950-272
AS267416-271

The 30 most visible of 32.

6 more neighbours appear on both sides of this network depending on the path, so they are counted in neither list.

Visibility is RIPEstat's count of how often the route collectors observed the link. It compares neighbours with each other; it is not a traffic volume.

How to read this page

An Autonomous System (AS) is a network run under one routing policy: an internet provider, a cloud, a content network, a university. Each one has a number, its ASN, assigned by a regional registry (ARIN, RIPE NCC, APNIC, LACNIC, AFRINIC), and uses BGP, the protocol networks use to tell each other where addresses are, to announce the blocks of addresses it delivers to.

A prefix such as 203.0.113.0/24 is a block of addresses: the number after the slash says how many bits are fixed, so a /24 holds 256 IPv4 addresses and a /16 holds 65,536. Networks often announce a large block and smaller pieces of it at the same time, which is why the address total counts each address once.

Neighbours come from the paths themselves. A network that appears just before this one in a path, on the collector's side, is an upstream: a transit provider or a peer. One that appears just after it is a downstream, usually a customer. Peering at an internet exchange also shows up as an upstream, so the upstream list is not a list of paid transit.

The data comes from RIPEstat, run by the RIPE NCC, which gathers the routing tables of hundreds of networks through its RIS route collectors. This page reads it when it is visited and keeps it for 12 hours at most; the BGP viewer reads it live.

Frequently asked questions

How do I find the ASN of an IP address?
Type the address in the BGP viewer: it shows the prefix that covers it, the AS that originates that prefix and the paths seen towards it. A traceroute also names the network of each hop, so you can see every AS a connection crosses.
Why does one company have several ASNs?
Large operators split their network by region, by activity or by history: a cloud may use one number for its backbone and another for a region, and every acquisition brings its own numbers. Each number has its own page, with its own prefixes and neighbours.
Why do prefix counts differ from one site to another?
Each source sees the routing table from different collectors, at a different time, and counts differently: some include prefixes withdrawn in recent weeks, some merge a block and its pieces. This page counts the prefixes RIPE RIS collectors see originated by the network at the end of the latest two-week window, and counts each IPv4 address once.
Is this the list of IP ranges of a cloud provider?
It is what its networks announce, which is what the Internet routes to them. Many providers also publish an official list of ranges per service and region; that list is the reference for firewall rules, because a range can be announced before it is used, or announced by another of their AS numbers.