Country
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ASN LANDING PAGE
AS21283
A1SI-AS - A1 Slovenija telekomunikacijske storitve,d.d.
Last updated · Apr 4, 2026
Total prefixes
21
IPv4 prefixes
18
IPv6 prefixes
3
ASN summary
How to read the scale of AS21283
A1SI-AS - A1 Slovenija telekomunikacijske storitve,d.d. currently shows 21 prefixes and 48 upstream, downstream, or peer relationships. Larger prefix inventories often indicate broader network footprint, but they should still be read together with country and peering context.
When is an ASN page most useful?
ASN landing pages are more useful than a single IP page when you want cloud provider attribution, routing research, infrastructure comparison, or network topology analysis at the organization level.
How should you read the country, organization, and role of AS21283?
A1SI-AS - A1 Slovenija telekomunikacijske storitve,d.d. is currently associated with an unknown region. Country data is only a starting point; the more important signals are the organization name, website, prefix volume, and peering relationships that reveal whether the network behaves like a cloud platform, ISP, CDN, or enterprise backbone.
What should you inspect next after the AS21283 page?
This page is currently showing live ASN data that can be used for peer, prefix, and network scale analysis. The most useful next step is usually to return to a related IP landing page, then compare that concrete address with this ASN profile and with broader topic pages for routing, cloud attribution, or WHOIS ownership analysis.
Search intents this ASN page helps cover
AS21283 ASN lookupAS21283 BGPAS21283 peersAS21283 prefixesAS21283 upstreamsA1SI-AS - A1 Slovenija telekomunikacijske storitve,d.d. ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS44968
AS44968
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AS199612
AS199612
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AS48894
AS48894
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AS210197
AS210197
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AS34367
AS34367
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AS25059
AS25059
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AS196895
AS196895
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AS197391
AS197391
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AS214296
AS214296
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AS196846
AS196846
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AS213115
AS213115
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AS198827
AS198827
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AS47917
AS47917
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AS49659
AS49659
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AS25467
AS25467
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AS201395
AS201395
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AS57517
AS57517
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AS28850
AS28850
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AS198061
AS198061
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AS203618
AS203618
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AS48419
AS48419
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AS198524
AS198524
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AS47993
AS47993
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AS48772
AS48772
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AS197907
AS197907
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AS25066
AS25066
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AS42473
AS42473
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AS29051
AS29051
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AS39727
AS39727
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AS31687
AS31687
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AS41970
AS41970
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AS15822
AS15822
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AS41505
AS41505
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Peers
Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 109.239.176.0/20 | AS21283 | — |
| 146.212.0.0/16 | AS21283 | — |
| 185.173.52.0/22 | AS21283 | — |
| 185.28.8.0/22 | AS21283 | — |
| 188.64.24.0/21 | AS21283 | — |
| 2001:15c0::/29 | AS21283 | — |
| 212.18.32.0/19 | AS21283 | — |
| 213.157.224.0/19 | AS21283 | — |
| 2a00:1a20::/29 | AS21283 | — |
| 2a00:1a20::/32 | AS21283 | — |
| 46.122.0.0/15 | AS21283 | — |
| 46.122.64.0/21 | AS21283 | — |
| 46.122.96.0/21 | AS21283 | — |
| 46.164.0.0/18 | AS21283 | — |
| 62.84.224.0/20 | AS21283 | — |
| 80.95.224.0/20 | AS21283 | — |
| 85.10.0.0/19 | AS21283 | — |
| 85.10.32.0/20 | AS21283 | — |
| 90.157.128.0/17 | AS21283 | — |
| 92.37.0.0/17 | AS21283 | — |
| 94.127.24.0/21 | AS21283 | — |
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Related lookups and next steps
WHOIS vs ASN Ownership Guide
Continue from this ASN into the differences between WHOIS ownership and ASN ownership.
Routing Troubleshooting and Network Analysis
Continue from this ASN into route troubleshooting and network analysis.
Cloud Network and ASN Comparison
Useful when you want to compare this ASN against larger cloud and edge networks.
WHOIS and IP Ownership Guide
Continue from the ASN page into WHOIS and ownership verification.
Frequently asked questions about this ASN page
What does AS21283 represent?
AS21283 is an autonomous system number used to identify an independently operated network. The current page associates it with A1SI-AS - A1 Slovenija telekomunikacijske storitve,d.d. in an unknown region, which helps determine whether it behaves like a cloud provider, ISP, CDN, or enterprise backbone.
What are peers, upstreams, and prefixes useful for on the AS21283 page?
They help explain the scale, interconnection depth, and route structure of AS21283. Richer peering and upstream data often indicate broader network reach, but they should still be interpreted together with prefixes and related IP landing pages.
What should you do after reviewing AS21283?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS21283, then continue into cloud, WHOIS, or routing topic pages to understand the network in a broader context.
Related topics
WHOIS vs ASN Ownership Guide
Understand why WHOIS ownership and ASN ownership can differ, and how to combine both when deciding who really owns or operates an IP.
WHOIS and IP Ownership Guide
Use WHOIS, ASN, prefixes, and organization data to determine who ultimately owns an IP, range, or resolved domain target.
BGP and ASN Basics Guide
Learn what ASN, BGP routes, prefixes, upstreams, downstreams, and peers mean, then explore real ASN pages.
Cloud Network and ASN Comparison
Compare large cloud and edge networks such as Google, Cloudflare, Microsoft, and Amazon through their ASN landing pages.