Country
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ASN LANDING PAGE
AS20559
FUNDAMENTS-AS - Fundaments B.V.
Last updated · Apr 4, 2026
Total prefixes
36
IPv4 prefixes
30
IPv6 prefixes
6
ASN summary
How to read the scale of AS20559
FUNDAMENTS-AS - Fundaments B.V. currently shows 36 prefixes and 41 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 AS20559?
FUNDAMENTS-AS - Fundaments B.V. 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 AS20559 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
AS20559 ASN lookupAS20559 BGPAS20559 peersAS20559 prefixesAS20559 upstreamsFUNDAMENTS-AS - Fundaments B.V. ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
Peers
AS20562
AS20562
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AS6939
AS6939
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AS174
AS174
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AS24785
AS24785
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AS8455
AS8455
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AS6461
AS6461
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AS5405
AS5405
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AS20764
AS20764
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AS34019
AS34019
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AS8298
AS8298
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AS24961
AS24961
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AS25091
AS25091
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AS41327
AS41327
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AS58057
AS58057
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AS14840
AS14840
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AS29632
AS29632
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AS1103
AS1103
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AS3214
AS3214
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AS3399
AS3399
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AS6057
AS6057
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AS6204
AS6204
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AS6424
AS6424
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AS8218
AS8218
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AS8283
AS8283
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AS9044
AS9044
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AS12779
AS12779
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AS12859
AS12859
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AS15958
AS15958
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AS24482
AS24482
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AS28917
AS28917
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AS29049
AS29049
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AS29140
AS29140
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AS34177
AS34177
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AS34927
AS34927
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AS35280
AS35280
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AS35360
AS35360
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AS36236
AS36236
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AS37468
AS37468
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AS37721
AS37721
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AS39122
AS39122
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Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 185.113.84.0/22 | AS20559 | — |
| 185.122.116.0/22 | AS20559 | — |
| 185.157.145.0/24 | AS20559 | — |
| 185.202.253.0/24 | AS20559 | — |
| 185.202.254.0/24 | AS20559 | — |
| 185.41.136.0/22 | AS20559 | — |
| 185.46.64.0/22 | AS20559 | — |
| 185.51.56.0/22 | AS20559 | — |
| 185.52.60.0/22 | AS20559 | — |
| 193.187.188.0/22 | AS20559 | — |
| 193.37.204.0/22 | AS20559 | — |
| 194.213.112.0/23 | AS20559 | — |
| 194.9.85.0/24 | AS20559 | — |
| 213.249.72.0/24 | AS20559 | — |
| 2a00:d10::/32 | AS20559 | — |
| 2a00:d1c0::/32 | AS20559 | — |
| 2a01:448:72::/48 | AS20559 | — |
| 2a03:3400::/32 | AS20559 | — |
| 2a06:6940::/29 | AS20559 | — |
| 2a07:3502:1160::/48 | AS20559 | — |
| 31.200.208.0/21 | AS20559 | — |
| 37.220.168.0/21 | AS20559 | — |
| 45.13.164.0/22 | AS20559 | — |
| 45.133.196.0/22 | AS20559 | — |
| 45.146.124.0/22 | AS20559 | — |
| 46.19.216.0/21 | AS20559 | — |
| 46.226.88.0/21 | AS20559 | — |
| 5.172.40.0/21 | AS20559 | — |
| 78.31.112.0/21 | AS20559 | — |
| 85.209.108.0/22 | AS20559 | — |
| 88.218.152.0/22 | AS20559 | — |
| 91.197.72.0/22 | AS20559 | — |
| 91.218.148.0/22 | AS20559 | — |
| 91.224.248.0/23 | AS20559 | — |
| 91.234.193.0/24 | AS20559 | — |
| 93.186.176.0/20 | AS20559 | — |
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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 AS20559 represent?
AS20559 is an autonomous system number used to identify an independently operated network. The current page associates it with FUNDAMENTS-AS - Fundaments B.V. 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 AS20559 page?
They help explain the scale, interconnection depth, and route structure of AS20559. 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 AS20559?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS20559, 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.