Country
—
ASN LANDING PAGE
AS21497
UMC-AS - PrJSC "VF UKRAINE"
Last updated · Apr 4, 2026
Total prefixes
157
IPv4 prefixes
156
IPv6 prefixes
1
ASN summary
How to read the scale of AS21497
UMC-AS - PrJSC "VF UKRAINE" currently shows 157 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 AS21497?
UMC-AS - PrJSC "VF UKRAINE" 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 AS21497 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
AS21497 ASN lookupAS21497 BGPAS21497 peersAS21497 prefixesAS21497 upstreamsUMC-AS - PrJSC "VF UKRAINE" ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS29491
AS29491
—
AS12883
AS12883
—
AS12593
AS12593
—
AS6702
AS6702
—
AS25372
AS25372
—
AS31148
AS31148
—
AS34265
AS34265
—
AS6703
AS6703
—
AS43309
AS43309
—
AS47359
AS47359
—
AS16007
AS16007
—
AS208038
AS208038
—
AS49168
AS49168
—
AS34143
AS34143
—
AS198429
AS198429
—
AS42799
AS42799
—
AS205722
AS205722
—
AS31062
AS31062
—
AS41375
AS41375
—
AS52151
AS52151
—
AS59602
AS59602
—
AS209647
AS209647
—
AS210068
AS210068
—
AS31504
AS31504
—
AS31589
AS31589
—
AS34118
AS34118
—
AS44800
AS44800
—
AS47940
AS47940
—
AS207889
AS207889
—
AS214324
AS214324
—
AS8813
AS8813
—
AS197602
AS197602
—
AS12294
AS12294
—
AS42719
AS42719
—
AS56439
AS56439
—
AS210330
AS210330
—
AS42327
AS42327
—
AS41685
AS41685
—
AS57441
AS57441
—
AS52003
AS52003
—
Peers
AS3257
AS3257
—
AS2914
AS2914
—
AS1273
AS1273
—
AS6939
AS6939
—
AS6461
AS6461
—
AS34019
AS34019
—
AS34549
AS34549
—
AS5405
AS5405
—
AS3214
AS3214
—
AS34177
AS34177
—
AS35280
AS35280
—
AS35625
AS35625
—
AS8298
AS8298
—
AS6057
AS6057
—
AS34927
AS34927
—
AS8758
AS8758
—
AS25091
AS25091
—
AS37468
AS37468
—
AS29691
AS29691
—
AS39351
AS39351
—
AS29075
AS29075
—
AS20764
AS20764
—
AS41327
AS41327
—
AS12779
AS12779
—
AS8218
AS8218
—
AS48362
AS48362
—
AS50673
AS50673
—
AS12637
AS12637
—
AS50763
AS50763
—
AS12859
AS12859
—
AS52320
AS52320
—
AS271253
AS271253
—
AS49605
AS49605
—
AS51873
AS51873
—
AS56987
AS56987
—
AS199524
AS199524
—
AS199938
AS199938
—
AS3333
AS3333
—
AS24482
AS24482
—
AS559
AS559
—
Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 128.124.0.0/16 | AS21497 | — |
| 128.124.0.0/17 | AS21497 | — |
| 128.124.0.0/18 | AS21497 | — |
| 128.124.0.0/19 | AS21497 | — |
| 128.124.128.0/17 | AS21497 | — |
| 128.124.128.0/18 | AS21497 | — |
| 128.124.128.0/19 | AS21497 | — |
| 128.124.160.0/19 | AS21497 | — |
| 128.124.192.0/18 | AS21497 | — |
| 128.124.192.0/19 | AS21497 | — |
| 128.124.224.0/19 | AS21497 | — |
| 128.124.32.0/19 | AS21497 | — |
| 128.124.64.0/18 | AS21497 | — |
| 128.124.64.0/19 | AS21497 | — |
| 128.124.96.0/19 | AS21497 | — |
| 178.133.0.0/16 | AS21497 | — |
| 178.133.0.0/17 | AS21497 | — |
| 178.133.0.0/18 | AS21497 | — |
| 178.133.0.0/19 | AS21497 | — |
| 178.133.128.0/17 | AS21497 | — |
| 178.133.128.0/18 | AS21497 | — |
| 178.133.128.0/19 | AS21497 | — |
| 178.133.160.0/19 | AS21497 | — |
| 178.133.192.0/18 | AS21497 | — |
| 178.133.192.0/19 | AS21497 | — |
| 178.133.224.0/19 | AS21497 | — |
| 178.133.32.0/19 | AS21497 | — |
| 178.133.64.0/18 | AS21497 | — |
| 178.133.64.0/19 | AS21497 | — |
| 178.133.96.0/19 | AS21497 | — |
| 178.136.104.0/21 | AS21497 | — |
| 178.136.28.0/22 | AS21497 | — |
| 178.136.32.0/22 | AS21497 | — |
| 178.136.40.0/21 | AS21497 | — |
| 178.136.64.0/23 | AS21497 | — |
| 178.136.66.0/23 | AS21497 | — |
| 178.136.68.0/23 | AS21497 | — |
| 178.136.70.0/23 | AS21497 | — |
| 178.136.72.0/23 | AS21497 | — |
| 178.136.74.0/23 | AS21497 | — |
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 AS21497 represent?
AS21497 is an autonomous system number used to identify an independently operated network. The current page associates it with UMC-AS - PrJSC "VF UKRAINE" 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 AS21497 page?
They help explain the scale, interconnection depth, and route structure of AS21497. 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 AS21497?
The best next step is usually to return to a concrete IP landing page to see how a specific address maps into AS21497, 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.