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AS37989DCS1

SingaporeRegistryAPNICTypeContent

As of 24th October 2026, AS37989 (DCS1), a content network registered in Singapore with APNIC, originates 2 IPv4 prefixes covering 1.3k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 33,392nd-largest of the 79,664 networks we see originating IPv4, and the 197th-largest of 443 in Singapore. It is seen behind 14 upstream networks, most often AS56300 (MyRepublic Ltd.) and AS6939 (Hurricane Electric LLC), and in front of 77 downstream networks. 67% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

2

IPv6 prefixes

1

IPv4 addresses

1.3k

IPv6 /64s

4.3B

Upstream graph

The networks AS37989 is seen behind, one and two hops out, drawn from real AS paths.

AS37989Toward the internet core
Upstream graph for AS37989: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS37989DCS1This networkAS4775Globe TelecomsAS6939Hurricane Electri…AS7713PT Telkom Indones…AS14537Continent 8 LLCAS56300MyRepublic Ltd.AS1299Arelion (fka. Tel…AS20130Depaul UniversityAS132337AxclusiveAS35280F5 Networks SARLAS2914NTT America, Inc.AS3356Lumen (Level 3)AS132132MyRepublic Ltd.

Networks observed one and two hops upstream of AS37989 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

485

adjacent networks

Upstreams
143%
Peers
39481%
Downstreams
7716%

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

Upstreams of AS37989
NetworkCountryRelationshipPathsVantage pts
AS56300MyRepublic Ltd.SGPeer1,74184
AS6939Hurricane Electric LLCUSPeer6359
AS7713PT Telkom Indonesia TbkIDPeer44
AS24482SG.GSSGPeer22
AS32590Valve CorporationUSPeer22
AS18106Viewqwest Pte LtdSGPeer22
AS49544i3D.net B.VNLPeer22
AS35280F5 Networks SARLFRPeer22
AS14537Continent 8 LLCUSPeer22
AS4775Globe TelecomsPHPeer22

Prefixes

The largest blocks AS37989 originates, widest first.

Largest prefixes originated by AS37989
PrefixAddressesVisibility
203.123.48.0/221k76/76
44.32.99.0/2425676/76
2405:fc00::/324.3B × /6462/63

Routing health

How AS37989'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

  • Valid66.7%2
  • Invalid0.0%0
  • No ROA33.3%1

Propagation

  • Globally propagated90% of full-feed peers or more100.0%3
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 2 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 24th Sept 2026.

No announcement by AS37989 started or stopped in this period.

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