Skip to content

Autonomous System

AS10217 ยท PT. NTT Indonesia

Overview

AS10217 is announced on the Internet: RIPE RIS route collectors currently see 20 IPv4 prefixes and 1 IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 40,960 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 10 upstream neighbours (transit providers or peers) and 23 downstream neighbours (customers or networks it carries). Its most visible upstreams are PT Aplikanusa Lintasarta (AS4800), NTT America, Inc. (AS2914), and Cogent Communications, LLC (AS174). AS10217 was assigned by APNIC, and its registration country is Indonesia.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 10:57 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 119.11.128.1, the first address of 119.11.128.0/17. 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 (20 prefixes)

PrefixAddresses
119.11.128.0/1732,768
119.11.128.0/1816,384
119.11.130.0/23512
119.11.130.0/24256
119.11.132.0/24256
119.11.181.0/24256
119.11.192.0/1816,384
119.11.196.0/24256
119.11.200.0/24256
119.11.209.0/24256
119.11.217.0/24256
119.11.218.0/24256
119.11.250.0/24256
119.11.251.0/24256
202.171.0.0/198,192
202.171.0.0/204,096
202.171.2.0/24256
202.171.9.0/24256
202.171.16.0/204,096
202.171.27.0/24256

IPv6 prefixes (1 prefix)

Prefix
2404:c8::/32

Neighbours

Upstreams (transit or peers) (10)

ASNetworkVisibility
AS4800PT Aplikanusa Lintasarta9,276
AS2914NTT America, Inc.3,508
AS174Cogent Communications, LLC2,586
AS6939Hurricane Electric LLC951
AS18059DTPNET NAP69
AS9002RETN Limited54
AS35280F5 Networks SARL28
AS7713PT Telekomunikasi Indonesia8
AS63516Transhybrid Internet Xchange2
AS149948PT Magna Network1

Downstreams (customers) (23)

ASNetworkVisibility
AS18059DTPNET NAP2,747
AS46031PT Telkom Satelit Indonesia2,188
AS38777PT. NTT Indonesia1,966
AS24225ABS/SMA-INDONESIA1,214
AS140481PT Tonggak Teknologi Netikom1,051
AS59139PT Wifiku Indonesia844
AS136054PT.COMTELINDO836
AS55653Skyline Semesta, PT738
AS137363PT. Quanta Tunas Abadi559
AS133815PT Primacom Interbuana542
AS24207-486
AS150257-483
AS56229-432
AS24212-291
AS136116-287
AS135457-279
AS138119-273
AS133807-149
AS138842-79
AS32787Akamai Technologies, Inc.70
AS4800PT Aplikanusa Lintasarta41
AS24538-15
AS131711-1

2 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.