subnet.im

AS25818CMC NETWORK (PTY) LTD

South AfricaRegistryAFRINIC

As of 11th November 2026, AS25818 (CMC NETWORK (PTY) LTD), a network registered in South Africa with AFRINIC, originates 59 IPv4 prefixes covering 46.3k addresses and 16 IPv6 prefixes. By IPv4 address space that makes it the 4,672nd-largest of the 80,763 networks we see originating IPv4, and the 50th-largest of 657 in South Africa. It is seen behind 62 upstream networks, most often AS6939 (Hurricane Electric LLC) and AS174 (Cogent Communications, LLC), and in front of 8 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 96% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

59

IPv6 prefixes

16

IPv4 addresses

46.3k

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…AS3741Dimension DataAS6453TATA Communicatio…AS6939Hurricane Electri…AS151326DCConnect Communi…AS2914NTT America, Inc.AS3356Lumen (Level 3)AS8220COLTAS32590Valve CorporationAS20130Depaul UniversityAS132337Axclusive

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

291

adjacent networks

Upstreams
6221%
Peers
22176%
Downstreams
83%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 62.

Upstreams of AS25818
NetworkCountryRelationshipPathsVantage pts
AS6939Hurricane Electric LLCUSPeer1,797127
AS174Cogent Communications, LLCUSPeer548134
AS3741Dimension DataZAPeer40581
AS6453TATA Communications (America) IncUSPeer40177
AS1299Arelion (fka. Telia Carrier)SEPeer26737
AS37271Workonline Communications(Pty) LtdZAPeer257139
AS30844Liquid Intelligent Technologies GBPeer21477
AS4637Telstra International LimitedHKPeer15477
AS3257GTT Communications Inc.USPeer15477
AS3356Lumen (Level 3)USPeer14924

Prefixes

All 75

The largest blocks AS25818 originates, widest first.

Largest prefixes originated by AS25818
PrefixAddressesVisibility
41.202.32.0/198.2k77/77
69.67.32.0/204.1k77/77
102.64.96.0/204.1k77/77
102.177.112.0/204.1k77/77
196.1.144.0/204.1k77/77
196.32.8.0/212k77/77
197.231.160.0/212k77/77
45.150.116.0/221k77/77
87.101.4.0/221k77/77
158.173.68.0/221k77/77

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%75
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more96.0%72
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%4.0%3

Prefix sizes

IPv4 — 59 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 12th Oct 2026.

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