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Autonomous System

AS45558 ยท MYANMA POSTS AND TELECOMMUNICATIONS

Overview

AS45558 is announced on the Internet: RIPE RIS route collectors currently see 8 IPv4 prefixes and no IPv6 prefix originated by this network. Together, its IPv4 prefixes cover 2,304 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 10 upstream neighbours (transit providers or peers) and 47 downstream neighbours (customers or networks it carries). Its most visible upstreams are Cogent Communications, LLC (AS174), National Telecom Public Company Limited (AS4651), and Singapore Telecommunications Ltd (AS7473). AS45558 was assigned by APNIC, and its registration country is Myanmar (Burma).

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

Go further

The trace goes to 45.41.96.1, the first address of 45.41.96.0/22. 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 (8 prefixes)

PrefixAddresses
43.224.43.0/24256
45.41.96.0/221,024
45.41.96.0/24256
45.41.97.0/24256
45.41.99.0/24256
203.215.60.0/221,024
203.215.62.0/24256
203.215.63.0/24256

IPv6 prefixes (none)

None currently seen.

Neighbours

Upstreams (transit or peers) (10)

ASNetworkVisibility
AS174Cogent Communications, LLC5,598
AS4651National Telecom Public Company Limited5,421
AS7473Singapore Telecommunications Ltd4,087
AS6762TELECOM ITALIA SPARKLE S.p.A.2,800
AS6939Hurricane Electric LLC574
AS136168Campana MYTHIC Co. Ltd.560
AS2497Internet Initiative Japan Inc.111
AS8966EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC92
AS2516KDDI CORPORATION68
AS134840Myanmar Country Co., Ltd.12

Downstreams (customers) (47)

ASNetworkVisibility
AS135307Golden TMH Telecom Co. Ltd1,519
AS9988Myanma Posts and Telecommunications1,323
AS136617Fortune Telecom Company Limited825
AS136780MYANMAR INFORMATION HIGHWAY LIMITED818
AS135405WELINK693
AS136975Global Technology682
AS10099China Unicom Global670
AS133524Global Technology Co., Ltd.645
AS134840Myanmar Country Co., Ltd.639
AS136480Myanmar Unilink Communication Company Limited581
AS135371Fortune Broadband520
AS139003-513
AS138167-484
AS137259-463
AS132100-416
AS149810-414
AS132148HORIZON TELECOM INTERNATIONAL COMPANY LIMITED413
AS132537-370
AS136205-360
AS151482MKTN ENGINEERING GROUP COMPANY LIMITED341
AS132167Nine Communications Company Limited325
AS63998-296
AS135433-293
AS137861-289
AS150310-287
AS134739-283
AS142126-282
AS141704-277
AS152140-273
AS136465-268

The 30 most visible of 47.

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.