subnet.im

AS25818CMC NETWORK (PTY) LTD

South AfricaRegistryAFRINIC

As of 27th September 2026, AS25818 (CMC NETWORK (PTY) LTD), a network registered in South Africa with AFRINIC, originates 58 IPv4 prefixes covering 46.1k addresses and 16 IPv6 prefixes. By IPv4 address space that makes it the 4,619th-largest of the 79,525 networks we see originating IPv4, and the 50th-largest of 653 in South Africa. It is seen behind 60 upstream networks, most often AS6939 (Hurricane Electric LLC) and AS174 (Cogent Communications, LLC), and in front of 7 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 91% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

58

IPv6 prefixes

16

IPv4 addresses

46.1k

IPv6 /64s

4.4B

Upstream graph

The networks AS25818 is seen behind, one and two hops out, drawn from real AS paths.

AS25818Toward the internet core
Upstream graph for AS25818: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS25818CMC NETWORK (PTY)…This networkAS174Cogent Communicat…AS1299Arelion (fka. Tel…AS6453TATA Communicatio…AS6939Hurricane Electri…AS37271Workonline Commun…AS151326DCConnect Communi…AS8888xTom Pty LtdAS13030Init7 (Switzerlan…AS8220COLTAS35280F5 Networks SARLAS18106Viewqwest Pte LtdAS20130Depaul University

Networks observed one and two hops upstream of AS25818 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

301

adjacent networks

Upstreams
6020%
Peers
23478%
Downstreams
72%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 60.

Upstreams of AS25818
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer1,897133
AS174Cogent Communications, LLCUSPeer397139
AS6453TATA Communications (America) IncUSPeer37981
AS1299Arelion (fka. Telia Carrier)SEPeer27334
AS37271Workonline Communications(Pty) LtdZAPeer265145
AS30844Liquid Intelligent Technologies GBPeer24581
AS3257GTT Communications Inc.USPeer16281
AS4637Telstra International LimitedHKPeer16281
AS3356Lumen (Level 3)USPeer15225
AS3741Dimension DataZAPeer14937

Prefixes

All 74

The largest blocks AS25818 originates, widest first.

Largest prefixes originated by AS25818
PrefixAddressesVisibility
41.202.32.0/198.2k81/81
69.67.32.0/204.1k81/81
102.64.96.0/204.1k81/81
102.177.112.0/204.1k81/81
196.1.144.0/204.1k81/81
196.32.8.0/212k81/81
197.231.160.0/212k81/81
45.150.116.0/221k81/81
87.101.4.0/221k81/81
158.173.68.0/221k81/81

Routing health

How AS25818'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

  • Valid100.0%74
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more90.5%67
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%9.5%7

Prefix sizes

IPv4 — 58 prefixes

IPv6 — 16 prefixes

  • /324.3B × /646.3%1
  • /4016.8M × /6431.3%5
  • /4865.5k × /6462.5%10

Recent changes

Announcements that started or stopped since 28th Aug 2026.

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