Built for Business.
Building a better telco for Adelaide.
Internet, phone systems, managed networks and data centre services — backed by a 100% Australian support team, based in Adelaide.
- 100% Australian support team — based in Adelaide
- Free onsite support — no call-out fees, ever
- No surprises on your bill — transparent pricing, no hidden fees
- One company. One point of contact. One invoice.
One of Adelaide's largest independent schools, with over 1,500 students and 250 staff across a sprawling Northern Suburbs campus.
"Caznet has supported St Columba College for over 10 years across our data centre, internet, core network, and phone systems. The entire College depends on these services — on campus and remotely, including after hours and weekends — so reliability is critical. Caznet has delivered this consistently, with stable, high-availability solutions. Their support is responsive, communication is clear, and they keep our systems running without unnecessary complexity."
Business telco and data centre services in Adelaide
NBN and fibre internet, hosted phone systems, managed networks and data centre co-location — all on one invoice, all supported by one local Adelaide team.
Business Internet Adelaide
NBN, NBN Enterprise Ethernet and Fibre plans with unlimited data and local support.
Business Phone Systems Adelaide
Cloud PBX, SIP trunks and Microsoft Teams Calling for Adelaide businesses.
Microsoft Teams Calling Adelaide
Turn Teams into your business phone. Chat, voice, video — one app, anywhere.
Adelaide Data Centre Co-Location
Secure, resilient rack space in our Adelaide data centre with 24/7 access.
Adelaide's local alternative to the big telcos
Big telcos are built for scale. We're built for Adelaide. Our entire team — support, operations, network — is 100% Australian, based right here in SA.
About Caznet →100% Australian support team
Based in Adelaide. No overseas call centres — real people who answer the phone.
Free onsite support
No call-out fees, ever. We come to you at no extra charge.
Transparent pricing
No surprises on your bill. What we quote is what you pay — no hidden fees.
One company. One invoice.
Internet, phones, networks and data centre — one point of contact for everything.
South Australian businesses powered by Caznet
St Columba College
10 Gbps inter-campus fibre, private cloud, multi-gigabit internet and a 180-handset phone system for one of SA's largest Foundation to Year 12 schools.
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Orthopaedics SA
Data centre co-location, 1 Gbps fibre across four sites and redundant NBN — eliminating a single point of failure for this multi-site SA medical practice.
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Town of Gawler
Dark fibre, data centre co-location and DDoS-protected internet for the Town of Gawler's Smart City initiative — delivered via public tender.
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Beaumont Tiles
Data centre co-location, enterprise internet, and franchise connectivity and phone systems for this national tile retailer.
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Climat
Private cloud, 1 Gbps fibre across six sites, and a unified phone system for this multi-site SA air conditioning, heating and solar business.
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Mary MacKillop College
Data centre migration, 10 Gbps fibre, backup internet and a hosted phone system ensuring continuity of learning through extended power outages.
Read case study →Trusted by hundreds of South Australian organisations
Let's talk about what your business needs.
No scripts, no pressure — just honest advice from a local team.