AS10474 — OPTINET
Network type: hosting
AS10474 announces 350 IPv4 prefixes covering 807,680 addresses and 1 IPv6 prefixes.
About this network
OPTINET is the South African consumer-ISP address space historically operated as MWEB, NetActive and Optinet, now held by Dimension Data. Internet Solutions (a Dimension Data company, itself part of NTT) absorbed the MWEB Business and Optinet Network Services divisions in 2015, and this AS carries the retail subscriber pools that came with them.
What it's used for
Home and small-business internet access in South Africa. RIS shows 17 announced IPv4 prefixes totalling roughly 1.38 million addresses, anchored by two /13s (197.88.0.0/13, 197.80.0.0/13), a 41.132.0.0/14 and a 152.111.0.0/16. Blocks of that size, in AFRINIC's 197/41 consumer ranges, are subscriber pools — you do not allocate 1.4 million addresses to a corporate LAN.
Notable
This is an eyeball network, and the reverse DNS settles it. Sampled PTRs land on 41-132-0-5.ftth.web.africa (fibre-to-the-home), 197-88-0-5.mweb.ipv4.as20011.net (MWEB's retail brand) and vic-up-1.mweb.net, with mcr5-se1-j.optinet.net and ns3.netactive.net marking the operator's own core routers and nameservers. Per-address hostnames templated from the IP itself are the signature of an access network handing out addresses to end users.
Only 3 observed neighbours are seen, which fits: a retail ISP buys transit upstream rather than peering broadly.
Interesting
The rDNS is a fossil record of a decade of South African ISP consolidation. MWEB, NetActive, Optinet and WebAfrica hostnames all coexist inside one AS, so do not read a single retail brand from a PTR here — the space carries several.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 41.86.109.0/24
- 41.132.76.0/23
- 41.132.80.0/20
- 41.132.96.0/19
- 41.132.128.0/17
- 41.133.0.0/18
- 41.133.104.0/21
- 41.133.118.0/23
- 41.133.120.0/23
- 41.133.124.0/22
- 41.133.128.0/21
- 41.133.136.0/22
- 41.133.140.0/23
- 41.133.144.0/20
- 41.133.160.0/19
- 41.134.0.0/19
- 41.134.32.0/20
- 41.134.48.0/24
- 41.134.50.0/23
- 41.134.52.0/22
- 41.134.56.0/22
- 41.134.60.0/23
- 41.134.62.0/24
- 41.134.64.0/19
- 41.134.96.0/21
- 41.134.104.0/24
- 41.134.106.0/23
- 41.134.108.0/22
- 41.134.112.0/20
- 41.134.128.0/21
- 41.134.136.0/22
- 41.134.141.0/24
- 41.134.142.0/23
- 41.134.144.0/20
- 41.134.160.0/19
- 41.134.192.0/20
- 41.134.208.0/21
- 41.134.216.0/22
- 41.134.221.0/24
- 41.134.222.0/23
- 41.134.224.0/22
- 41.134.228.0/23
- 41.134.231.0/24
- 41.134.232.0/21
- 41.134.240.0/20
- 41.135.96.0/20
- 41.135.112.0/23
- 41.135.114.0/24
- 41.135.116.0/22
- 41.135.123.0/24
- 41.135.124.0/22
- 41.135.128.0/18
- 41.135.224.0/19
- 152.111.0.0/24
- 152.111.7.0/24
- 152.111.13.0/24
- 152.111.38.0/23
- 152.111.40.0/24
- 152.111.42.0/24
- 152.111.48.0/23
- 152.111.50.0/24
- 152.111.52.0/24
- 152.111.57.0/24
- 152.111.58.0/24
- 152.111.60.0/22
- 152.111.64.0/23
- 152.111.66.0/24
- 152.111.70.0/23
- 152.111.72.0/24
- 152.111.74.0/23
- 152.111.76.0/24
- 152.111.80.0/22
- 152.111.84.0/24
- 152.111.86.0/23
- 152.111.88.0/22
- 152.111.92.0/23
- 152.111.96.0/23
- 152.111.98.0/24
- 152.111.102.0/24
- 152.111.106.0/23
- 152.111.110.0/23
- 152.111.112.0/20
- 152.111.128.0/23
- 152.111.138.0/23
- 152.111.140.0/23
- 152.111.142.0/24
- 152.111.147.0/24
- 152.111.150.0/24
- 152.111.152.0/23
- 152.111.156.0/23
- 152.111.158.0/24
- 152.111.160.0/23
- 152.111.164.0/24
- 152.111.169.0/24
- 152.111.170.0/23
- 152.111.176.0/24
- 152.111.178.0/23
- 152.111.181.0/24
- 152.111.184.0/24
- 152.111.189.0/24
and 251 more.
Upstream networks
- AS3741 Dimension Data
Downstream networks
Adjacent networks
Internet exchanges
- LINX LON1 — London, United Kingdom
- NAPAfrica IX Johannesburg — Johannesburg, South Africa
- NAPAfrica IX Cape Town — Cape Town, South Africa
- Johannesburg Internet Exchange — Johannesburg, South Africa
- NAPAfrica IX Durban — Durban, South Africa
- Cape Town Internet Exchange — Cape Town, South Africa
- Durban Internet eXchange — Durban, South Africa
awaiting query
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