Autonomous System
AS18403 · FPT Telecom Company
Overview
AS18403 is announced on the Internet: RIPE RIS route collectors currently see 4,726 IPv4 prefixes and 3,772 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 1,422,080 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 113 upstream neighbours (transit providers or peers) and 252 downstream neighbours (customers or networks it carries). Its most visible upstreams are Telstra Global (AS4637), Arelion Sweden AB (AS1299), and Opentransit Orange S.A. (AS5511). AS18403 was assigned by APNIC, and its registration country is Vietnam.
Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 8:58 PM UTC. This page is refreshed at most every 12 hours.
Go further
The trace goes to 42.112.0.1, the first address of 42.112.0.0/13. 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 (4,726 prefixes)
| Prefix | Addresses |
|---|---|
| 1.52.0.0/14 | 262,144 |
| 1.52.0.0/18 | 16,384 |
| 1.52.0.0/20 | 4,096 |
| 1.52.0.0/23 | 512 |
| 1.52.2.0/24 | 256 |
| 1.52.3.0/24 | 256 |
| 1.52.4.0/24 | 256 |
| 1.52.5.0/24 | 256 |
| 1.52.6.0/24 | 256 |
| 1.52.7.0/24 | 256 |
| 1.52.8.0/23 | 512 |
| 1.52.10.0/24 | 256 |
| 1.52.11.0/24 | 256 |
| 1.52.12.0/24 | 256 |
| 1.52.13.0/24 | 256 |
| 1.52.14.0/24 | 256 |
| 1.52.15.0/24 | 256 |
| 1.52.16.0/20 | 4,096 |
| 1.52.16.0/24 | 256 |
| 1.52.17.0/24 | 256 |
| 1.52.18.0/24 | 256 |
| 1.52.19.0/24 | 256 |
| 1.52.20.0/24 | 256 |
| 1.52.21.0/24 | 256 |
| 1.52.22.0/24 | 256 |
| 1.52.23.0/24 | 256 |
| 1.52.24.0/24 | 256 |
| 1.52.25.0/24 | 256 |
| 1.52.26.0/24 | 256 |
| 1.52.27.0/24 | 256 |
| 1.52.28.0/24 | 256 |
| 1.52.29.0/24 | 256 |
| 1.52.31.0/24 | 256 |
| 1.52.32.0/20 | 4,096 |
| 1.52.32.0/24 | 256 |
| 1.52.33.0/24 | 256 |
| 1.52.34.0/24 | 256 |
| 1.52.35.0/24 | 256 |
| 1.52.36.0/24 | 256 |
| 1.52.37.0/24 | 256 |
| 1.52.38.0/24 | 256 |
| 1.52.39.0/24 | 256 |
| 1.52.40.0/23 | 512 |
| 1.52.42.0/24 | 256 |
| 1.52.43.0/24 | 256 |
| 1.52.44.0/24 | 256 |
| 1.52.45.0/24 | 256 |
| 1.52.46.0/24 | 256 |
| 1.52.47.0/24 | 256 |
| 1.52.48.0/20 | 4,096 |
| 1.52.49.0/24 | 256 |
| 1.52.50.0/24 | 256 |
| 1.52.51.0/24 | 256 |
| 1.52.52.0/24 | 256 |
| 1.52.53.0/24 | 256 |
| 1.52.54.0/24 | 256 |
| 1.52.55.0/24 | 256 |
| 1.52.56.0/23 | 512 |
| 1.52.58.0/23 | 512 |
| 1.52.60.0/23 | 512 |
| 1.52.62.0/24 | 256 |
| 1.52.63.0/24 | 256 |
| 1.52.64.0/18 | 16,384 |
| 1.52.64.0/20 | 4,096 |
| 1.52.64.0/23 | 512 |
| 1.52.66.0/24 | 256 |
| 1.52.67.0/24 | 256 |
| 1.52.68.0/24 | 256 |
| 1.52.69.0/24 | 256 |
| 1.52.71.0/24 | 256 |
| 1.52.72.0/24 | 256 |
| 1.52.73.0/24 | 256 |
| 1.52.74.0/24 | 256 |
| 1.52.75.0/24 | 256 |
| 1.52.76.0/24 | 256 |
| 1.52.77.0/24 | 256 |
| 1.52.78.0/24 | 256 |
| 1.52.79.0/24 | 256 |
| 1.52.80.0/20 | 4,096 |
| 1.52.80.0/24 | 256 |
| 1.52.81.0/24 | 256 |
| 1.52.82.0/24 | 256 |
| 1.52.83.0/24 | 256 |
| 1.52.84.0/24 | 256 |
| 1.52.85.0/24 | 256 |
| 1.52.86.0/24 | 256 |
| 1.52.87.0/24 | 256 |
| 1.52.88.0/24 | 256 |
| 1.52.89.0/24 | 256 |
| 1.52.90.0/24 | 256 |
| 1.52.91.0/24 | 256 |
| 1.52.92.0/24 | 256 |
| 1.52.93.0/24 | 256 |
| 1.52.94.0/24 | 256 |
| 1.52.95.0/24 | 256 |
| 1.52.96.0/20 | 4,096 |
| 1.52.96.0/23 | 512 |
| 1.52.98.0/24 | 256 |
| 1.52.99.0/24 | 256 |
| 1.52.100.0/24 | 256 |
Showing the first 100 of 4,726, in address order. Complete list on RIPEstat
IPv6 prefixes (3,772 prefixes)
| Prefix |
|---|
| 2405:4800::/30 |
| 2405:4800::/32 |
| 2405:4800:100::/48 |
| 2405:4800:104::/48 |
| 2405:4800:105::/48 |
| 2405:4800:10c::/48 |
| 2405:4800:10d::/48 |
| 2405:4800:10f::/48 |
| 2405:4800:110::/48 |
| 2405:4800:111::/48 |
| 2405:4800:203::/48 |
| 2405:4800:206::/48 |
| 2405:4800:2fe::/48 |
| 2405:4800:12a8::/46 |
| 2405:4800:12d8::/46 |
| 2405:4800:18c2::/48 |
| 2405:4800:18c3::/48 |
| 2405:4800:1e00::/46 |
| 2405:4800:1e04::/46 |
| 2405:4800:1e0c::/46 |
| 2405:4800:1e10::/46 |
| 2405:4800:1e14::/46 |
| 2405:4800:1e18::/46 |
| 2405:4800:1e1c::/46 |
| 2405:4800:2de0::/47 |
| 2405:4800:2de2::/47 |
| 2405:4800:2de4::/47 |
| 2405:4800:2de6::/47 |
| 2405:4800:2de8::/47 |
| 2405:4800:2dea::/47 |
| 2405:4800:2dec::/47 |
| 2405:4800:2dee::/47 |
| 2405:4800:5710::/46 |
| 2405:4800:5714::/46 |
| 2405:4800:5720::/46 |
| 2405:4800:5724::/46 |
| 2405:4800:5800::/41 |
| 2405:4800:589c::/46 |
| 2405:4800:58a0::/46 |
| 2405:4800:58b0::/46 |
| 2405:4800:58b4::/46 |
| 2405:4800:58b8::/46 |
| 2405:4800:58bc::/46 |
| 2405:4800:58c0::/46 |
| 2405:4800:58c4::/46 |
| 2405:4800:58c8::/46 |
| 2405:4800:58f4::/46 |
| 2405:4800:5900::/46 |
| 2405:4800:5904::/46 |
| 2405:4800:5908::/46 |
| 2405:4800:590c::/46 |
| 2405:4800:5910::/46 |
| 2405:4800:5914::/46 |
| 2405:4800:5918::/46 |
| 2405:4800:591c::/46 |
| 2405:4800:5940::/46 |
| 2405:4800:5944::/46 |
| 2405:4800:5948::/46 |
| 2405:4800:5b00::/46 |
| 2405:4800:5b04::/46 |
| 2405:4800:5b08::/46 |
| 2405:4800:5b0c::/46 |
| 2405:4800:5c41::/48 |
| 2405:4800:5cc2::/48 |
| 2405:4800:5cc3::/48 |
| 2405:4800:5cc4::/48 |
| 2405:4800:5cc5::/48 |
| 2405:4800:5cc7::/48 |
| 2405:4800:5cc8::/48 |
| 2405:4800:5cc9::/48 |
| 2405:4800:6240::/46 |
| 2405:4800:6244::/46 |
| 2405:4800:6248::/46 |
| 2405:4800:624c::/46 |
| 2405:4800:6250::/46 |
| 2405:4800:6254::/46 |
| 2405:4800:6258::/46 |
| 2405:4800:625c::/46 |
| 2405:4800:a403::/48 |
| 2405:4800:a601::/48 |
| 2405:4801::/32 |
| 2405:4802::/32 |
| 2405:4802:30::/44 |
| 2405:4802:60::/44 |
| 2405:4802:80::/44 |
| 2405:4802:a0::/44 |
| 2405:4802:c0::/44 |
| 2405:4802:e0::/44 |
| 2405:4802:1e0::/44 |
| 2405:4802:1f0::/44 |
| 2405:4802:200::/44 |
| 2405:4802:210::/44 |
| 2405:4802:300::/44 |
| 2405:4802:310::/44 |
| 2405:4802:320::/44 |
| 2405:4802:330::/44 |
| 2405:4802:380::/44 |
| 2405:4802:390::/44 |
| 2405:4802:3a0::/44 |
| 2405:4802:3b0::/44 |
Showing the first 100 of 3,772, in address order. Complete list on RIPEstat
Neighbours
Upstreams (transit or peers) (113)
| AS | Network | Visibility |
|---|---|---|
| AS4637 | Telstra Global | 20,150 |
| AS1299 | Arelion Sweden AB | 15,368 |
| AS5511 | Opentransit Orange S.A. | 6,960 |
| AS3356 | Level 3 Parent, LLC | 5,306 |
| AS3491 | PCCW Global (HK) Ltd. | 4,369 |
| AS2914 | NTT America, Inc. | 4,042 |
| AS6939 | Hurricane Electric LLC | 3,456 |
| AS4229 | Zenlayer Inc | 3,412 |
| AS6453 | TATA COMMUNICATIONS (AMERICA) INC | 3,229 |
| AS8220 | COLT Technology Services Group Limited | 1,225 |
| AS5405 | Inter.link GmbH | 962 |
| AS35280 | F5 Networks SARL | 859 |
| AS7473 | Singapore Telecommunications Ltd | 852 |
| AS8966 | EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC | 764 |
| AS34019 | Hivane Association | 762 |
| AS34927 | iFog GmbH | 748 |
| AS34549 | meerfarbig GmbH & Co. KG | 709 |
| AS58453 | China Mobile International Limited | 667 |
| AS25091 | IP-Max SA | 648 |
| AS3303 | Swisscom (Schweiz) AG | 641 |
| AS35625 | Eurofiber France SAS | 635 |
| AS8298 | IPng Networks GmbH | 580 |
| AS39351 | 31173 Services AB | 570 |
| AS34177 | Celeste SAS | 497 |
| AS8758 | Iway AG | 483 |
| AS29691 | Nine Internet Solutions AG | 476 |
| AS38008 | Aperture Science Limited | 476 |
| AS14840 | BR.Digital Telecom | 468 |
| AS12859 | - | 463 |
| AS41327 | Fiber Telecom S.p.A. | 462 |
The 30 most visible of 113.
Downstreams (customers) (252)
| AS | Network | Visibility |
|---|---|---|
| AS149107 | TRUMVPS COMPANY LIMITED | 6,120 |
| AS21859 | Zenlayer Inc | 3,185 |
| AS150895 | EZ TECHNOLOGY COMPANY LIMITED | 3,097 |
| AS140810 | Megacore Technology Company Limited | 2,781 |
| AS135067 | LOGICOM TECHNOLOGY CO.,LIMITED | 2,528 |
| AS131429 | MOBIFONE Corporation | 1,871 |
| AS38244 | VNG Corporation | 1,682 |
| AS140766 | FPT Smart Cloud Company Limited | 1,512 |
| AS135918 | VIET DIGITAL TECHNOLOGY LIABILITY COMPANY | 1,438 |
| AS140825 | Thien Quang Digital technology joint stock company | 1,152 |
| AS150698 | - | 1,114 |
| AS151858 | - | 1,106 |
| AS135967 | - | 1,060 |
| AS45896 | Mobifone Global JSC | 1,056 |
| AS131423 | - | 1,051 |
| AS135977 | - | 1,010 |
| AS151872 | - | 919 |
| AS45557 | - | 812 |
| AS24085 | - | 809 |
| AS45894 | - | 782 |
| AS150828 | - | 759 |
| AS56150 | - | 724 |
| AS131353 | - | 704 |
| AS135964 | - | 684 |
| AS138915 | Kaopu Cloud HK Limited | 676 |
| AS139057 | Edgenext Legend Dynasty Pte. Ltd. | 676 |
| AS140807 | - | 670 |
| AS140799 | - | 625 |
| AS63760 | - | 584 |
| AS131402 | - | 576 |
The 30 most visible of 252.
75 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.