Country
—
ASN LANDING PAGE
AS2603
NORDUNET NORDUnet
Last updated · Jul 20, 2026
Total prefixes
12
IPv4 prefixes
10
IPv6 prefixes
2
ASN summary
How to read the scale of AS2603
NORDUNET NORDUnet currently reports 12 prefixes and 76 upstream, downstream, or peer relationships. These counts describe the current dataset; they do not by themselves prove network quality, reach, or service use.
What can an ASN page answer?
An ASN page shows the public organization label, country or region, BGP prefixes, and available peer and upstream relationships. It adds network context but cannot confirm a website host, physical facility, security status, or service quality.
How should you read the organization and region fields?
NORDUNET NORDUnet is currently associated with an unknown region. These values come from public network sources and are useful lookup clues; an organization label, registration region, and actual service location may differ.
How should you verify the AS2603 result?
The page shows ASN data returned by the current upstream query; interpret it with the update time. Open representative IP pages from the same network and compare prefixes, source labels, and query times. Verify operator or service claims with the relevant registry or network operator.
How to verify this ASN result
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
—
AS224
AS224
—
AS1741
AS1741
—
AS8674
AS8674
—
AS15474
AS15474
—
AS39590
AS39590
—
AS2832
AS2832
—
AS2847
AS2847
—
AS198093
AS198093
—
AS3221
AS3221
—
AS6509
AS6509
—
AS3301
AS3301
—
AS16086
AS16086
—
AS6667
AS6667
—
AS6461
AS6461
—
AS30818
AS30818
—
AS39889
AS39889
—
AS48685
AS48685
—
AS30880
AS30880
—
AS1850
AS1850
—
AS12969
AS12969
—
AS13335
AS13335
—
AS20514
AS20514
—
AS24743
AS24743
—
AS25509
AS25509
—
AS29689
AS29689
—
AS44275
AS44275
—
AS51896
AS51896
—
AS42
AS42
—
AS11537
AS11537
—
AS12996
AS12996
—
AS47699
AS47699
—
AS47708
AS47708
—
Peers
AS1299
AS1299
—
AS6762
AS6762
—
AS6939
AS6939
—
AS34549
AS34549
—
AS6777
AS6777
—
AS3491
AS3491
—
AS25091
AS25091
—
AS50304
AS50304
—
AS48362
AS48362
—
AS6461
AS6461
—
AS9002
AS9002
—
AS34019
AS34019
—
AS4635
AS4635
—
AS34177
AS34177
—
AS61049
AS61049
—
AS21320
AS21320
—
AS20764
AS20764
—
AS3214
AS3214
—
AS35710
AS35710
—
AS199524
AS199524
—
AS41327
AS41327
—
AS51088
AS51088
—
AS2914
AS2914
—
AS24482
AS24482
—
AS205206
AS205206
—
AS51519
AS51519
—
AS50629
AS50629
—
AS29695
AS29695
—
AS6730
AS6730
—
AS6894
AS6894
—
AS13030
AS13030
—
AS6908
AS6908
—
AS2027
AS2027
—
AS12859
AS12859
—
AS39122
AS39122
—
AS49544
AS49544
—
AS3170
AS3170
—
AS35280
AS35280
—
AS42541
AS42541
—
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
Review Google network organization fields, prefixes, peers, upstreams, and downstreams.
AS13335 · Cloudflare
Review Cloudflare network organization fields, prefixes, peers, upstreams, and downstreams.
AS8075 · Microsoft
Review Microsoft network organization fields, prefixes, peers, upstreams, and downstreams.
AS16509 · Amazon
Review Amazon network organization fields, prefixes, peers, upstreams, and downstreams.
Related lookups and next steps
Frequently asked questions about this ASN page
What does AS2603 represent?
AS2603 is an autonomous system number. The current source associates it with NORDUNET NORDUnet and the region field an unknown region; those values add network context but do not prove a specific service, physical location, or quality level.
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?
Open a concrete IP page to check how the address maps into AS2603, then compare the prefix, source labels, and query time. Verify operator or service claims with the relevant registry or network operator.
Related topics
BGP and ASN Basics Guide
Use real IP and ASN pages to understand ASNs, BGP prefixes, peers, upstreams, and downstreams, including the limits of each snapshot.
Routing Troubleshooting and Network Analysis
Build troubleshooting context from an IP, BGP prefix, ASN, and public network relationships without treating static route data as a packet path.
Cloud Network and ASN Comparison
Compare representative cloud and edge networks by ASN, announced prefixes, peers, upstreams, and downstreams without inferring a specific host or customer workload.