Autonomous system
AS37673 Telemasters
Residential AFRINIC Cable/DSL/ISP
Summary
Telemasters
isp cable dsl south-africa
Telemasters is operated by Telemasters, a South African telecommunications and technology investment company.
What it's used for
- The address space carries subscriber traffic, evidenced by reverse DNS entries pointing to
datamasters.co.zaacross the announced prefixes. - The AS announces 4,096 IPv4 addresses across 5 prefixes and maintains 22 observed neighbours, a ratio consistent with an access network providing connectivity to end-users.
- As a Cable/DSL/ISP, the traffic consists of residential and business broadband subscribers accessing the internet via fixed-line technologies.
Notable
- Registrants for the largest prefixes (
41.77.24.0/21,196.223.56.0/22,196.223.60.0/23) are listed asTelemasterswith the netnameORG-TA32-AFRINIC, aligning with the AS holder. - Telemasters Holdings Limited is a JSE-listed investment company that launched Catalytic in 2018 as a subsidiary, focusing on connecting humans through telecommunications infrastructure in Africa.
- The inventory is composed of a single /21 block and four smaller blocks within the 196.223.0.0/16 range, all located in South Africa.
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 3 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| NAPAfrica IX Johannesburg | Johannesburg, South Africa | 196.60.8.210 |
| NAPAfrica IX Cape Town | Cape Town, South Africa | 196.60.70.210 |
| NAPAfrica IX Durban | Durban, South Africa | 196.10.141.210 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 4.10K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| ZA | South Africa | 5 |
Registry
Allocation record
- Registry
- AFRINIC
- Registered
- 2013-06-24
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Telemasters
- Also known as
- Telemasters
- Network type
- Cable/DSL/ISP
- Scope
- Africa
- Traffic ratio
- Mostly Inbound
- Peering policy
- Open
- IRR as-set
AS-TLM-37673- Present at
- 3 exchanges
- Facilities
- 3 facilities
- Website
- http://www.catalytic.co.za
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 8 with no ROA
- ROAs
- 0 authorising AS37673
- ASPA
- no ASPA record
- IRR
- 63% registered · 5 of 8 announcements 2 other origin
- Route objects
- 5 naming AS37673
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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: 432 networks and 1,768 prefixes, as published 2026-10-12. 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