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Autonomous System

AS23951 · PT JEMBATAN CITRA NUSANTARA

Overview

AS23951 is announced on the Internet: RIPE RIS route collectors currently see 100 IPv4 prefixes and 41 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 17,408 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 9 upstream neighbours (transit providers or peers) and 20 downstream neighbours (customers or networks it carries). Its most visible upstreams are PT. Mega Akses Persada (AS136106), PT iForte Solusi Infotek - NAP (AS137366), and PT Aplikanusa Lintasarta (AS4800). AS23951 was assigned by APNIC, and its registration country is Indonesia.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 12:02 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 202.152.128.1, the first address of 202.152.128.0/19. 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 (100 prefixes)

PrefixAddresses
103.101.136.0/221,024
103.101.138.0/23512
103.101.138.0/24256
103.101.139.0/24256
117.20.48.0/204,096
117.20.48.0/212,048
117.20.48.0/221,024
117.20.48.0/23512
117.20.48.0/24256
117.20.49.0/24256
117.20.50.0/24256
117.20.51.0/24256
117.20.52.0/23512
117.20.52.0/24256
117.20.53.0/24256
117.20.54.0/23512
117.20.54.0/24256
117.20.55.0/24256
117.20.56.0/221,024
117.20.56.0/24256
117.20.57.0/24256
117.20.58.0/24256
117.20.59.0/24256
117.20.60.0/23512
117.20.60.0/24256
117.20.61.0/24256
117.20.62.0/23512
117.20.62.0/24256
117.20.63.0/24256
202.65.112.0/204,096
202.65.112.0/212,048
202.65.112.0/221,024
202.65.112.0/23512
202.65.112.0/24256
202.65.113.0/24256
202.65.114.0/23512
202.65.114.0/24256
202.65.115.0/24256
202.65.116.0/221,024
202.65.116.0/23512
202.65.116.0/24256
202.65.117.0/24256
202.65.118.0/23512
202.65.118.0/24256
202.65.119.0/24256
202.65.120.0/23512
202.65.120.0/24256
202.65.121.0/24256
202.65.122.0/23512
202.65.122.0/24256
202.65.123.0/24256
202.152.128.0/198,192
202.152.128.0/204,096
202.152.128.0/212,048
202.152.128.0/221,024
202.152.128.0/23512
202.152.128.0/24256
202.152.129.0/24256
202.152.130.0/23512
202.152.130.0/24256
202.152.132.0/221,024
202.152.132.0/23512
202.152.132.0/24256
202.152.134.0/23512
202.152.134.0/24256
202.152.135.0/24256
202.152.136.0/23512
202.152.136.0/24256
202.152.137.0/24256
202.152.138.0/23512
202.152.138.0/24256
202.152.139.0/24256
202.152.140.0/221,024
202.152.140.0/23512
202.152.140.0/24256
202.152.141.0/24256
202.152.142.0/23512
202.152.142.0/24256
202.152.143.0/24256
202.152.144.0/221,024
202.152.144.0/23512
202.152.144.0/24256
202.152.145.0/24256
202.152.146.0/23512
202.152.146.0/24256
202.152.147.0/24256
202.152.148.0/23512
202.152.148.0/24256
202.152.149.0/24256
202.152.150.0/23512
202.152.150.0/24256
202.152.151.0/24256
202.152.153.0/24256
202.152.155.0/24256
202.152.156.0/23512
202.152.156.0/24256
202.152.157.0/24256
202.152.158.0/23512
202.152.158.0/24256
202.152.159.0/24256

IPv6 prefixes (41 prefixes)

Prefix
2401:ee00::/32
2401:ee00:101::/48
2401:ee00:102::/48
2401:ee00:103::/48
2401:ee00:104::/48
2401:ee00:105::/48
2401:ee00:106::/48
2401:ee00:107::/48
2401:ee00:120::/48
2401:ee00:121::/48
2401:ee00:123::/48
2401:ee00:129::/48
2401:ee00:130::/48
2401:ee00:1040::/48
2401:ee00:1041::/48
2401:ee00:1042::/48
2401:ee00:1044::/48
2401:ee00:1045::/48
2401:ee00:1046::/48
2401:ee00:1081::/48
2401:ee00:1e11::/48
2401:ee00:1e12::/48
2401:ee00:1e13::/48
2401:ee00:1e81::/48
2401:ee00:1e82::/48
2401:ee00:1e83::/48
2401:ee00:1e84::/48
2401:ee00:1e85::/48
2401:ee00:1e86::/48
2401:ee00:1e87::/48
2401:ee00:2000::/36
2401:ee00:2010::/48
2401:ee00:2020::/48
2401:ee00:20ff::/48
2401:ee00:3001::/48
2401:ee00:3002::/48
2401:ee00:3041::/48
2401:ee00:3042::/48
2401:ee00:3043::/48
2401:ee00:3044::/48
2401:ee00:30ff::/48

Neighbours

Upstreams (transit or peers) (9)

ASNetworkVisibility
AS136106PT. Mega Akses Persada5,722
AS137366PT iForte Solusi Infotek - NAP2,612
AS4800PT Aplikanusa Lintasarta2,204
AS7713PT Telekomunikasi Indonesia517
AS35280F5 Networks SARL21
AS7717OpenIXP ASN8
AS2518BIGLOBE Inc.5
AS9930TIME dotCom Berhad No. 14, Jalan Majistret U1/26 Hicom Glenmarie Industrial Park 40150 Shah Alam Selangor, Malaysia1
AS23764CTGNet1

Downstreams (customers) (20)

ASNetworkVisibility
AS63293Facebook, Inc.1,059
AS58487CV. Rumahweb Indonesia798
AS131112Sekolah Tinggi Multi Media "MMTC" Yogyakarta569
AS55662CV. CITRAWEB NUSA INFOMEDIA561
AS139341ACE553
AS147129Universitas Aisyiyah Surakarta553
AS137368Poltekkes Kemenkes Surakarta551
AS136839STMIK AKAKOM550
AS14789Cloudflare, Inc.482
AS138069PT CITRAWEB DIGITAL MULTISOLUSI465
AS55695-307
AS153077-306
AS24429Taobao - Zhejiang Taobao Network Co.,Ltd301
AS59275-291
AS135441-289
AS55654-271
AS152387-271
AS139364-113
AS55672-95
AS136123-45

21 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.