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Autonomous System

AS3786 · LG DACOM Corporation

Overview

AS3786 is announced on the Internet: RIPE RIS route collectors currently see 855 IPv4 prefixes and 57 IPv6 prefixes originated by this network. Together, its IPv4 prefixes cover 8,666,368 addresses, with overlapping prefixes counted once. In the paths the collectors record, it has 97 upstream neighbours (transit providers or peers) and 425 downstream neighbours (customers or networks it carries). Its most visible upstreams are Level 3 Parent, LLC (AS3356), TATA COMMUNICATIONS (AMERICA) INC (AS6453), and Arelion Sweden AB (AS1299). AS3786 was assigned by ARIN, and its registration country is South Korea.

Source: RIPEstat (RIPE NCC), RIS route collectors. Read on October 16, 2026 at 8:57 PM UTC. This page is refreshed at most every 12 hours.

Go further

The trace goes to 1.208.0.1, the first address of 1.208.0.0/12. 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 (855 prefixes)

PrefixAddresses
1.208.0.0/121,048,576
1.208.2.0/24256
23.49.48.0/23512
23.58.88.0/24256
23.201.58.0/24256
27.255.69.0/24256
27.255.74.0/24256
27.255.82.0/24256
27.255.83.0/24256
27.255.84.0/24256
27.255.86.0/24256
27.255.95.0/24256
43.230.80.0/221,024
45.115.152.0/24256
45.115.153.0/24256
45.115.154.0/24256
45.115.155.0/24256
45.120.68.0/24256
45.120.69.0/24256
45.120.70.0/24256
45.120.71.0/24256
58.72.0.0/13524,288
58.141.122.0/24256
58.148.0.0/14262,144
58.184.2.0/24256
58.184.7.0/24256
58.184.11.0/24256
58.184.76.0/24256
58.184.113.0/24256
58.184.146.0/24256
58.184.147.0/24256
58.184.148.0/24256
58.184.149.0/24256
59.186.0.0/15131,072
60.196.0.0/15131,072
60.196.12.0/24256
61.5.160.0/198,192
61.32.0.0/13524,288
61.33.14.0/24256
61.33.39.0/24256
61.33.204.0/24256
61.35.56.0/24256
61.37.119.0/24256
61.37.230.0/24256
61.38.12.0/24256
61.38.14.0/24256
61.40.0.0/14262,144
61.97.32.0/198,192
61.97.112.0/204,096
61.101.244.0/221,024
61.108.89.0/24256
61.111.0.0/1816,384
61.249.92.0/221,024
61.251.112.0/23512
61.252.76.0/221,024
101.55.0.0/1816,384
103.55.188.0/24256
103.55.189.0/24256
103.55.190.0/24256
103.55.191.0/24256
103.80.134.0/24256
103.143.78.0/24256
103.226.96.0/221,024
104.77.91.0/24256
106.103.183.0/24256
106.103.184.0/24256
106.103.185.0/24256
106.103.186.0/24256
106.103.189.0/24256
106.103.191.0/24256
106.103.192.0/24256
106.103.193.0/24256
106.103.194.0/24256
106.103.195.0/24256
106.103.196.0/24256
106.103.197.0/24256
106.103.198.0/24256
106.103.199.0/24256
106.103.200.0/24256
106.103.201.0/24256
106.103.202.0/24256
106.103.203.0/24256
106.103.204.0/24256
106.103.205.0/24256
106.103.206.0/24256
106.103.207.0/24256
106.103.208.0/204,096
106.103.224.0/23512
106.103.226.0/24256
106.103.227.0/24256
106.103.228.0/24256
106.103.229.0/24256
106.103.230.0/24256
106.103.231.0/24256
106.103.232.0/24256
106.103.233.0/24256
106.103.234.0/24256
106.103.235.0/24256
106.103.236.0/24256
106.103.237.0/24256

Showing the first 100 of 855, in address order. Complete list on RIPEstat

IPv6 prefixes (57 prefixes)

Prefix
2001:270::/33
2001:270::/36
2001:270:1000::/36
2001:270:2000::/36
2001:270:3000::/36
2001:270:4000::/36
2001:270:5000::/36
2001:270:6000::/36
2001:270:7000::/36
2001:270:8000::/34
2001:270:8000::/36
2001:270:9000::/36
2001:270:a000::/36
2001:270:b000::/36
2001:270:c000::/35
2001:270:c000::/36
2001:270:d000::/36
2001:270:e000::/37
2001:270:e800::/39
2001:270:ec00::/40
2001:270:ee00::/40
2001:270:ef00::/40
2001:270:f000::/37
2001:270:f800::/39
2001:270:fa30::/48
2001:270:fb30::/48
2001:270:fc00::/40
2001:270:fe00::/40
2001:270:ff00::/41
2001:270:ff80::/42
2001:270:ffc0::/43
2001:270:ffe0::/44
2001:270:fff0::/45
2001:270:fff8::/46
2001:270:fffc::/47
2001:270:fffe::/48
2001:270:ffff::/48
2001:ed0::/32
2001:ed0:a::/48
2001:ed0:f::/48
2406:5900::/32
2406:5900::/36
2406:5900:1000::/36
2406:5900:2000::/36
2406:5900:3000::/36
2406:5900:4000::/36
2406:5900:5000::/36
2406:5900:6000::/36
2406:5900:7000::/36
2406:5900:8000::/36
2406:5900:9000::/36
2406:5900:a000::/36
2406:5900:b000::/36
2406:5900:c000::/36
2406:5900:d000::/36
2406:5900:e000::/36
2406:5900:f000::/36

Neighbours

Upstreams (transit or peers) (97)

ASNetworkVisibility
AS3356Level 3 Parent, LLC9,911
AS6453TATA COMMUNICATIONS (AMERICA) INC7,860
AS1299Arelion Sweden AB4,714
AS2914NTT America, Inc.4,078
AS9002RETN Limited3,947
AS174Cogent Communications, LLC3,888
AS6939Hurricane Electric LLC2,646
AS13030Init7 (Switzerland) Ltd.1,555
AS3491PCCW Global (HK) Ltd.1,026
AS34549meerfarbig GmbH & Co. KG995
AS20485Joint Stock Company TransTeleCom965
AS6830LibertyGlobal Liberty Global Europe Holding B.V.936
AS25091IP-Max SA924
AS49434FBW NETWORKS SAS880
AS29075IELO-LIAZO SERVICES SAS816
AS8455atom86 BV790
AS50629LWLcom GmbH772
AS33891Core-Backbone GmbH737
AS5405Inter.link GmbH728
AS60068Datacamp Limited673
AS4637Telstra Global650
AS8298IPng Networks GmbH591
AS3935131173 Services AB569
AS58453China Mobile International Limited556
AS8218Zayo Infrastructure France SA491
AS50673Serverius Holding B.V.477
AS34019Hivane Association465
AS3303Swisscom (Schweiz) AG452
AS9121-444
AS9318SK Broadband Co Ltd442

The 30 most visible of 97.

Downstreams (customers) (425)

ASNetworkVisibility
AS38091LG HelloVision Corp.4,823
AS138195MOACK.Co.LTD1,684
AS38661abcle1,350
AS17841NATIONAL INFORMATION RESOURCES SERVICE1,212
AS45974NHNCLOUD1,163
AS10036DLIVE676
AS9982PAICHAI UNIVERSITY650
AS7562HCN Dongjak636
AS17853LGTELECOM604
AS18176KOOKMIN UNIVERSITY542
AS4663-538
AS9767-520
AS18027-518
AS4791-512
AS17858-477
AS10167-456
AS9972-418
AS9769-416
AS131093-403
AS9871-397
AS23582-397
AS38692-395
AS9688-393
AS55585-385
AS9761-380
AS9632-353
AS9638-352
AS38707-344
AS4668-342
AS9959-340

The 30 most visible of 425.

87 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.