Leading internet providers in Slovenia continue to set the pace in Central Europe by delivering reliable connectivity through expanded fiber optic and advanced mobile technologies. Highlighted below are the most preferred ISPs, showcasing the country’s network dynamics in performance, coverage, affordability, and overall customer satisfaction.
The local telecommunication market with a penetration rate of about 91 percent reflects about 1.94 million active internet users with an upward trajectory.
55 Best internet providers in Slovenia
Finding an ideal ISP for your home or business requires more than comparing download speeds alone. We have factored in varied budgets to ensure you settle for the most suitable plan.
Which is the fastest internet in Slovenia?
1. Telekom Slovenije (SiOL)
Telekom Slovenije runs the country’s largest fixed-line network and sells home internet under the SiOL brand.
Phone
041 700 700
Website
telekom.si
SiOL packages bundle fiber internet with TV and mobile lines, and customer service representatives handle billing, technical faults, and plan changes through the same hotline.
2. A1 Slovenija
A1 built its reputation on competitive pricing and now ranks among the leading full-service operators in the country.
Phone
040 40 40 40
Website
a1.si
Subscribers reach A1’s 24-hour support line for everything from outage reports to new fiber installations, and the company’s virtual assistant, Lumi, fields routine questions before transferring callers to a human agent.
3. Telemach
Telemach grew out of the old cable-TV networks and now positions itself as Slovenia’s fastest-expanding mobile and broadband operator.
Its GIGA fiber network powers triple-play bundles of internet, television, and telephony, and a separate international line (+386 70 700 710) accommodates customers calling from abroad.
4. T-2
T-2 operates an entirely company-owned FTTH and VDSL network, which lets it skip wholesale access fees that smaller rivals often pay.
Phone
064 064 064
Website
t-2.net
Callers can reach a live agent at any hour, and a virtual assistant named Titina now also answers questions through the T-2 website and Viber.
5. Softnet
Softnet focuses primarily on business connectivity, offering dedicated and always-on internet access across Slovenia and the wider Southeast European region.
Phone
+386 1 8100 100
Website
softnet.si
Corporate clients use the same number for sales inquiries and technical support, while SLA customers receive a dedicated round-the-clock contact line listed in the service contract.
6. Stelkom
Stelkom leans on the fiber backbone of Slovenia’s state-owned electricity network, giving it one of the most extensive infrastructure footprints in the country.
Phone
+386 1 620 22 00
Website
stelkom.si
Banks, broadcasters, and large institutions rely on Stelkom’s high-capacity DWDM and IP/MPLS links, and a separate 24-hour technical line (+386 41 699 999) handles urgent faults.
7. Tritel
Tritel designs, builds, and maintains open broadband fiber networks in numerous Slovenian municipalities rather than operating under one single regional brand.
Phone
+386 51 692 460
Website
tritel.si
Residents in towns with Tritel-built infrastructure typically choose their actual service provider, Telekom Slovenije, Amis, or another partner, once Tritel completes the physical fiber connection.
8. GVO
GVO specializes in constructing and maintaining telecommunications cable networks as a member of the Telekom Slovenije Group.
Phone
+386 1 234 19 50
Website
gvo.si
Property owners contact GVO directly to schedule new line installations, though ongoing service issues on completed connections still route through Telekom Slovenije’s main support number.
ARNES stands apart from the other entries on this list, since it serves as Slovenia’s academic and research network rather than a retail consumer provider.
Phone
(01) 479 88 00
Website
arnes.si
Universities, schools, libraries, and research institutes depend on ARNES for connectivity, domain registration, and cybersecurity coordination through its national SI-CERT team.
10. KKS Kamnik
KKS Kamnik delivers cable television, broadband internet, and VoIP telephony to households within the Kamnik municipality.
Phone
041 707 388
Website
kks-kamnik.si
Local subscribers can text or email the office directly for account questions, although calls placed during the current signal migration to T-2 route automatically through T-2’s call center first.
Slovenia’s diverse ISP market ensures that every subscriber, from city residents to rural communities, households to enterprises can find a connectivity solution tailored to their needs.
Internet coverage across states in Slovenia
No
Region
Capital
Pop
1
Central Slovenia
Ljubljana
570k
2
Drava
Maribor
330k
3
Savinja
Celje
260k
4
Upper Carniola
Kranj
210k
5
Coastal–Karst
Koper
120k
6
Southeast Slovenia
Novo Mesto
150k
7
Lower Sava
Krško
77k
8
Carinthia
Slovenj Gradec
72k
9
Mura
Murska Sobota
112k
10
Central Sava
Trbovlje
57k
11
Littoral–Inner Carniola
Postojna
54k
12
Gorizia
Nova Gorica
118k
In conclusion, Slovenia’s internet industry continues to thrive amid rising numbers of national telecoms, regional fiber operators, and innovative connectivity providers. Go ahead and contact your preferred ISP for a quotation and installation requirements.
Bsc. Mechatronics engineer & founder of Rejnac Group Inc. with a strong passion for Robotics, networking, ICT, digital marketing, and AI applications. My goal in this web project is to highlight exciting tech trends that are transforming your living room and workspaces. DM on WhatsApp or [email protected].
