subnet.im

AS9457DREAMLINE CO.

South KoreaRegistryAPNIC

As of 10th November 2026, AS9457 (DREAMLINE CO.), a network registered in South Korea with APNIC, originates 132 IPv4 prefixes covering 921k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 493rd-largest of the 80,733 networks we see originating IPv4, and the 10th-largest of 915 in South Korea. It is seen behind 13 upstream networks, most often AS2914 (NTT America, Inc.) and AS174 (Cogent Communications, LLC), and in front of 40 downstream networks. 21% of its announcements have a valid RPKI ROA; 18 are RPKI-invalid. 78% of its routes reach at least 90% of full-feed peers, and 3 prefixes are also originated by another network.

At a glance

IPv4 prefixes

132

IPv6 prefixes

1

IPv4 addresses

921k

IPv6 /64s

4.3B

Upstream graph

The networks AS9457 is seen behind, one and two hops out, drawn from real AS paths.

AS9457Toward the internet core
Upstream graph for AS9457: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS9457DREAMLINE CO.This networkAS174Cogent Communicat…AS2914NTT America, Inc.AS4637Telstra Internati…AS6939Hurricane Electri…AS18106Viewqwest Pte LtdAS1299Arelion (fka. Tel…AS151326DCConnect Communi…AS49544i3D.net B.VAS16552Tiggee LLCAS32590Valve CorporationAS215859Hetzner Cloud - S…AS20130Depaul University

Networks observed one and two hops upstream of AS9457 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

119

adjacent networks

Upstreams
1311%
Peers
6655%
Downstreams
4034%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS9457
NetworkCountryRelationshipPathsVantage pts
AS2914NTT America, Inc.USPeer21,156117
AS174Cogent Communications, LLCUSPeer17,87099
AS4637Telstra International LimitedHKPeer4,023108
AS6939Hurricane Electric LLCUSPeer5037
AS18106Viewqwest Pte LtdSGPeer3862
AS3786LG DACOM CorporationKRPeer32666
AS4775Globe TelecomsPHAdjacent1261
AS9002RETN LimitedGBPeer1121
AS35280F5 Networks SARLFRPeer1121
AS49544i3D.net B.VNLPeer1121

Prefixes

All 133

The largest blocks AS9457 originates, widest first.

Largest prefixes originated by AS9457
PrefixAddressesVisibility
61.103.0.0/1665.5k75/76
61.107.0.0/1665.5k75/76
121.53.0.0/1665.5k75/76
125.57.0.0/1665.5k75/76
211.175.0.0/1665.5k75/76
211.183.0.0/1665.5k75/76
211.249.0.0/1665.5k75/76
220.64.0.0/1665.5k75/76
220.230.0.0/1665.5k75/76
61.96.0.0/1732.8k75/76

Routing health

How AS9457's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid21.1%28
  • Invalid13.5%18
  • No ROA65.4%87

Propagation

  • Globally propagated90% of full-feed peers or more78.2%104
  • Partially propagated40% to 90%0.8%1
  • Seen by few peersUnder 40%21.1%28

Prefix sizes

IPv4 — 132 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

18 announced and 6 withdrawn in all; the most recent are shown.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.