Country
—
ASN LANDING PAGE
AS2603
NORDUNET - NORDUnet
Last updated · Apr 4, 2026
Total prefixes
12
IPv4 prefixes
10
IPv6 prefixes
2
ASN summary
How to read the scale of AS2603
NORDUNET - NORDUnet currently shows 12 prefixes and 75 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 AS2603?
NORDUNET - NORDUnet 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 AS2603 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
AS2603 ASN lookupAS2603 BGPAS2603 peersAS2603 prefixesAS2603 upstreamsNORDUNET - NORDUnet ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS21320
AS21320
—
AS1653
AS1653
—
AS8501
AS8501
—
AS1835
AS1835
—
AS1741
AS1741
—
AS224
AS224
—
AS8674
AS8674
—
AS15474
AS15474
—
AS39590
AS39590
—
AS2847
AS2847
—
AS2832
AS2832
—
AS3221
AS3221
—
AS198093
AS198093
—
AS3301
AS3301
—
AS6509
AS6509
—
AS16086
AS16086
—
AS6461
AS6461
—
AS30818
AS30818
—
AS48685
AS48685
—
AS30880
AS30880
—
AS1850
AS1850
—
AS12969
AS12969
—
AS13335
AS13335
—
AS15169
AS15169
—
AS24743
AS24743
—
AS25509
AS25509
—
AS29689
AS29689
—
AS44275
AS44275
—
AS50572
AS50572
—
AS51896
AS51896
—
AS42
AS42
—
AS11537
AS11537
—
AS12996
AS12996
—
AS47699
AS47699
—
AS47708
AS47708
—
Peers
AS1299
AS1299
—
AS6762
AS6762
—
AS6939
AS6939
—
AS3491
AS3491
—
AS34549
AS34549
—
AS6777
AS6777
—
AS25091
AS25091
—
AS6461
AS6461
—
AS50304
AS50304
—
AS9002
AS9002
—
AS48362
AS48362
—
AS3214
AS3214
—
AS50629
AS50629
—
AS34019
AS34019
—
AS2914
AS2914
—
AS20764
AS20764
—
AS34177
AS34177
—
AS4635
AS4635
—
AS21320
AS21320
—
AS29075
AS29075
—
AS35710
AS35710
—
AS41327
AS41327
—
AS51088
AS51088
—
AS24482
AS24482
—
AS29695
AS29695
—
AS205206
AS205206
—
AS51519
AS51519
—
AS51185
AS51185
—
AS6730
AS6730
—
AS6894
AS6894
—
AS2027
AS2027
—
AS39122
AS39122
—
AS12859
AS12859
—
AS13030
AS13030
—
AS6908
AS6908
—
AS49544
AS49544
—
AS42541
AS42541
—
AS35280
AS35280
—
AS37468
AS37468
—
AS28716
AS28716
—
Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 109.105.112.0/21 | AS2603 | — |
| 109.105.120.0/22 | AS2603 | — |
| 109.105.96.0/20 | AS2603 | — |
| 185.174.116.0/22 | AS2603 | — |
| 192.36.171.0/24 | AS2603 | — |
| 193.10.252.0/24 | AS2603 | — |
| 193.10.254.0/24 | AS2603 | — |
| 193.10.255.0/24 | AS2603 | — |
| 193.11.3.0/24 | AS2603 | — |
| 194.68.13.0/24 | AS2603 | — |
| 2001:948::/29 | AS2603 | — |
| 2001:948::/32 | AS2603 | — |
Related ASN pages
AS15169 · Google
A strong reference ASN for Google DNS, Google Cloud, and global network footprint analysis.
AS13335 · Cloudflare
Useful for analyzing CDN, Anycast, WAF, and large-scale edge network behavior.
AS8075 · Microsoft
Helpful when comparing Azure, enterprise backbone, and large-cloud routing patterns.
AS16509 · Amazon
A useful ASN landing page for understanding AWS and large cloud-network ownership.
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 AS2603 represent?
AS2603 is an autonomous system number used to identify an independently operated network. The current page associates it with NORDUNET - NORDUnet 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 AS2603 page?
They help explain the scale, interconnection depth, and route structure of AS2603. 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 AS2603?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS2603, 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.