Autonomous system
AS25818 CMCNETWORKS
Unclassified AFRINIC
Summary
CMC Networks
isp residential south-africa nsp
CMCNETWORKS is operated by CMC Networks.
What it's used for
- The address space carries residential and business internet access, evidenced by reverse DNS entries such as
ldn-ipa-2.metro.uk-inx-ipa-1.cmcnetworks.netand generic reverse pointers underreverse.cmcnetworks.net. - The AS announces 33,536 IPv4 addresses across 40 prefixes and 79 IPv6 prefixes, while maintaining 179 observed neighbours; this ratio of moderate address space to high peering density indicates a national internet service provider and network service provider role.
Notable
- Registrants consistently identify as CMC NETWORK (PTY) LTD or CMC Networks, aligning with the AS handle and registry holder.
- The address inventory is finely subdivided into numerous /21, /22, and /23 blocks, reflecting a segmented internal estate for different service regions or customer segments.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 14 exchanges in 11 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.193.83 |
| LINX LON1 | London, United Kingdom | 195.66.225.98 |
| Neutral Internet Exchange | Amsterdam, Netherlands | 193.239.116.225 |
| NAPAfrica IX Johannesburg | Johannesburg, South Africa | 196.60.8.191 |
| NAPAfrica IX Cape Town | Cape Town, South Africa | 196.60.70.191 |
| Johannesburg Internet Exchange | Johannesburg, South Africa | 196.60.97.51 |
| Kenya Internet Exchange Point - Nairobi | Nairobi, Kenya | 196.223.21.45 |
| NAPAfrica IX Durban | Durban, South Africa | 196.10.141.191 |
Transit providers
47 upstream, 7 downstream and 70 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-19, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 39 prefixes · 33.54K addresses IPv6 76 prefixes
| Country | Name | Prefixes |
|---|---|---|
| ZA | South Africa | 115 |
Registry
Allocation record
- Registry
- AFRINIC
- Handle
AS25818- Registry name
- ORG-cA1-AFRINIC
- Registrant
- CMC NETWORK (PTY) LTD
- Registered
- 2010-02-10
- Last changed
- 2026-04-23
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 73 valid, 0 with no ROA
- ROAs
- 40 authorising AS25818
- ASPA
- no ASPA record
- IRR
- 100% registered · 73 of 73 announcements
- Route objects
- 112 naming AS25818
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,778 prefixes, as published 2026-10-20. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere