Country
—
ASN LANDING PAGE
AS3303
SWISSCOM - Swisscom (Schweiz) AG
Last updated · Apr 4, 2026
Total prefixes
400
IPv4 prefixes
351
IPv6 prefixes
49
ASN summary
How to read the scale of AS3303
SWISSCOM - Swisscom (Schweiz) AG currently shows 400 prefixes and 80 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 AS3303?
SWISSCOM - Swisscom (Schweiz) AG 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 AS3303 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
AS3303 ASN lookupAS3303 BGPAS3303 peersAS3303 prefixesAS3303 upstreamsSWISSCOM - Swisscom (Schweiz) AG ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS6939
AS6939
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AS3356
AS3356
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AS12874
AS12874
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AS2914
AS2914
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AS174
AS174
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AS6453
AS6453
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AS12956
AS12956
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AS16735
AS16735
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AS3257
AS3257
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AS3491
AS3491
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AS23520
AS23520
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AS4637
AS4637
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AS11164
AS11164
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AS4230
AS4230
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AS52468
AS52468
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AS3320
AS3320
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AS12389
AS12389
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AS13786
AS13786
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AS201054
AS201054
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AS4134
AS4134
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AS32098
AS32098
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AS9002
AS9002
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AS8758
AS8758
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AS6461
AS6461
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AS6128
AS6128
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AS34019
AS34019
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AS18678
AS18678
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AS14840
AS14840
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AS577
AS577
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AS17676
AS17676
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AS6774
AS6774
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AS6327
AS6327
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AS4766
AS4766
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AS2497
AS2497
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AS1273
AS1273
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AS1257
AS1257
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AS852
AS852
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AS9121
AS9121
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AS58453
AS58453
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AS29222
AS29222
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Peers
AS34019
AS34019
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AS8758
AS8758
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AS59414
AS59414
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AS15547
AS15547
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AS15623
AS15623
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AS29222
AS29222
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AS6939
AS6939
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AS12637
AS12637
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AS2914
AS2914
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AS3320
AS3320
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AS3356
AS3356
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AS3257
AS3257
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AS3491
AS3491
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AS50629
AS50629
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AS3214
AS3214
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AS48362
AS48362
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AS25091
AS25091
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AS174
AS174
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AS20764
AS20764
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AS6453
AS6453
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AS9002
AS9002
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AS8280
AS8280
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AS852
AS852
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AS205206
AS205206
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AS20080
AS20080
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AS3212
AS3212
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AS51088
AS51088
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AS15958
AS15958
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AS45049
AS45049
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AS577
AS577
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AS30781
AS30781
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AS14907
AS14907
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AS49028
AS49028
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AS34549
AS34549
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AS49709
AS49709
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AS2027
AS2027
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AS50628
AS50628
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AS9304
AS9304
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AS13786
AS13786
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AS8717
AS8717
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Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 109.164.128.0/17 | AS3303 | — |
| 109.164.128.0/18 | AS3303 | — |
| 109.164.192.0/18 | AS3303 | — |
| 136.238.12.0/23 | AS3303 | — |
| 136.238.14.0/24 | AS3303 | — |
| 136.238.2.0/23 | AS3303 | — |
| 138.187.128.0/18 | AS3303 | — |
| 138.188.0.0/16 | AS3303 | — |
| 138.190.0.0/16 | AS3303 | — |
| 138.223.0.0/16 | AS3303 | — |
| 138.81.0.0/18 | AS3303 | — |
| 138.81.128.0/18 | AS3303 | — |
| 144.2.112.0/20 | AS3303 | — |
| 144.2.64.0/18 | AS3303 | — |
| 144.2.64.0/19 | AS3303 | — |
| 144.2.64.0/20 | AS3303 | — |
| 144.2.80.0/20 | AS3303 | — |
| 144.2.96.0/19 | AS3303 | — |
| 144.2.96.0/20 | AS3303 | — |
| 146.4.0.0/16 | AS3303 | — |
| 146.4.0.0/17 | AS3303 | — |
| 146.4.128.0/17 | AS3303 | — |
| 149.133.4.0/23 | AS3303 | — |
| 152.89.80.0/22 | AS3303 | — |
| 156.135.24.0/22 | AS3303 | — |
| 156.135.8.0/22 | AS3303 | — |
| 160.63.200.0/21 | AS3303 | — |
| 160.63.24.0/22 | AS3303 | — |
| 160.63.80.0/21 | AS3303 | — |
| 161.78.0.0/20 | AS3303 | — |
| 162.21.0.0/16 | AS3303 | — |
| 164.128.128.0/18 | AS3303 | — |
| 164.128.192.0/18 | AS3303 | — |
| 164.128.32.0/19 | AS3303 | — |
| 164.128.64.0/19 | AS3303 | — |
| 170.17.128.0/17 | AS3303 | — |
| 170.17.128.0/18 | AS3303 | — |
| 170.17.192.0/18 | AS3303 | — |
| 170.205.64.0/18 | AS3303 | — |
| 170.205.64.0/19 | AS3303 | — |
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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 AS3303 represent?
AS3303 is an autonomous system number used to identify an independently operated network. The current page associates it with SWISSCOM - Swisscom (Schweiz) AG 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 AS3303 page?
They help explain the scale, interconnection depth, and route structure of AS3303. 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 AS3303?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS3303, 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.