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Autonomous System

AS6400 · Compania Dominicana de Telefonos S. A.

Overview

AS6400 is announced on the Internet: RIPE RIS route collectors currently see 109 IPv4 prefixes and 11 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 844,032 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 7 upstream neighbours (transit providers or peers) and 13 downstream neighbours (customers or networks it carries). Its most visible upstreams are Arelion Sweden AB (AS1299), NTT America, Inc. (AS2914), and Cogent Communications, LLC (AS174). AS6400 was assigned by ARIN, and its registration country is Dominican Republic.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 17, 2026 at 6:54 AM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 179.52.0.1, the first address of 179.52.0.0/15. 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 (109 prefixes)

PrefixAddresses
64.32.64.0/1816,384
64.32.88.0/24256
66.98.0.0/1816,384
66.98.4.0/24256
66.98.61.0/24256
66.98.64.0/198,192
66.98.69.0/24256
66.98.72.0/221,024
66.98.77.0/24256
66.98.84.0/221,024
148.0.0.0/1665,536
148.0.0.0/1816,384
148.0.128.0/198,192
148.0.160.0/198,192
148.0.224.0/198,192
148.101.0.0/1665,536
148.101.0.0/1732,768
148.101.128.0/1732,768
148.101.128.0/198,192
148.101.160.0/204,096
148.101.192.0/198,192
148.101.224.0/198,192
148.255.0.0/1665,536
148.255.0.0/198,192
148.255.160.0/198,192
148.255.192.0/198,192
152.0.0.0/1665,536
152.0.80.0/204,096
152.0.96.0/204,096
152.0.128.0/204,096
179.52.0.0/15131,072
179.52.0.0/1665,536
179.52.32.0/198,192
179.52.128.0/198,192
179.52.160.0/198,192
179.52.224.0/198,192
179.53.0.0/198,192
179.53.32.0/204,096
179.53.192.0/198,192
179.61.16.0/204,096
186.6.0.0/15131,072
186.6.0.0/1732,768
186.6.128.0/1816,384
186.6.192.0/198,192
186.7.0.0/1665,536
186.7.0.0/198,192
186.7.32.0/198,192
186.7.64.0/198,192
186.7.96.0/198,192
186.7.128.0/198,192
186.7.160.0/198,192
186.7.192.0/204,096
186.7.220.0/221,024
186.7.240.0/204,096
190.12.192.0/198,192
190.80.128.0/1732,768
190.80.136.0/212,048
190.80.150.0/23512
190.80.164.0/24256
190.80.176.0/221,024
190.80.238.0/23512
190.80.244.0/24256
190.80.245.0/24256
190.80.246.0/24256
190.80.248.0/221,024
190.80.254.0/23512
190.166.0.0/15131,072
190.166.0.0/1665,536
190.166.0.0/1816,384
190.166.16.0/204,096
190.166.212.0/23512
190.166.239.0/24256
190.167.0.0/1665,536
190.167.0.0/204,096
190.167.16.0/204,096
190.167.32.0/23512
190.167.34.0/23512
190.167.48.0/204,096
190.167.112.0/204,096
190.167.128.0/204,096
190.167.144.0/24256
190.167.168.0/212,048
190.167.192.0/24256
196.3.74.0/23512
196.3.76.0/221,024
196.3.80.0/212,048
196.3.88.0/23512
200.1.155.0/24256
200.88.0.0/1665,536
200.88.0.0/1732,768
200.88.51.0/24256
200.88.52.0/24256
200.88.128.0/212,048
200.88.136.0/212,048
200.88.157.0/24256
200.88.160.0/204,096
200.88.190.0/24256
200.88.192.0/204,096
200.88.232.0/24256
200.88.235.0/24256

Showing the first 100 of 109, in address order. Complete list on RIPEstat

IPv6 prefixes (11 prefixes)

Prefix
2001:1308::/32
2001:1308:1c00::/39
2001:1308:2000::/39
2001:1308:2400::/39
2001:1308:2600::/39
2001:1308:2800::/39
2001:1308:2c00::/39
2001:1308:a200::/39
2001:1308:a400::/39
2001:1308:ae00::/39
2001:1308:b200::/39

Neighbours

Upstreams (transit or peers) (7)

ASNetworkVisibility
AS1299Arelion Sweden AB1,643
AS2914NTT America, Inc.1,012
AS174Cogent Communications, LLC840
AS6453TATA COMMUNICATIONS (AMERICA) INC731
AS12956TELEFONICA GLOBAL SOLUTIONS SL564
AS701Verizon Business300
AS64126DOMINICAN TELECOM PRIME, DTP, S.R.L.14

Downstreams (customers) (13)

ASNetworkVisibility
AS274192TELECABLE EL CERCADO, S.R.L.381
AS262178Pontificia Universidad Catolica Madre y Maestra (PUCMM)349
AS273157CORPORACION DE COMUNICACIONES Y TELEFONIA TURISTICA JUANILLO, S.A.349
AS267896Direccion General De Impuestos Internos333
AS262931Servicios De Ti Dominicana Sc,Sas308
AS263723DRL MANUFACTURING SPM261
AS262247Banco Popular Dominicano234
AS264817REFINERIA DOMINICANA DE PETROLEO PDV S.A229
AS271940BANCO DE RESERVAS DE LA REPUBLICA DOMINICANA BANCO DE SERVICIOS MULTIPLES, S.A211
AS263748CONSORCIO DE TARJETAS DOMINICANAS S.A126
AS266709-124
AS262148-123
AS272867-116

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.