Top-Level Domain
.ac
Aggregated statistics for the top-level domain
Apex domains
9,861
we've enumerated
Subdomains seen
46,416
CT + DNS + brute
TLS certs
—
naming .ac
Hosting ASNs
—
distinct origins
Domain Distribution
Apex domains with the most known subdomains — large orgs, telecoms, hosters.
| Apex | Subdomains |
|---|---|
| gel.ac | 3,737 |
| wildgoose.ac | 1,621 |
| thai.ac | 957 |
| brookes.ac | 949 |
| doc.ac | 639 |
| polygon.ac | 589 |
| remote.ac | 554 |
| nios.ac | 451 |
| credit.ac | 419 |
| ipb.ac | 203 |
| ani.ac | 199 |
| adu.ac | 199 |
| que.ac | 176 |
| biotr.ac | 174 |
| ccc.ac | 164 |
| 1it.ac | 152 |
| ube.ac | 151 |
| umi.ac | 145 |
| uns.ac | 138 |
| kln.ac | 134 |
| sums.ac | 133 |
| iisc.ac | 129 |
| shu.ac | 128 |
| una.ac | 126 |
| sci-hub.ac | 123 |
| kvs.ac | 114 |
| solarmovie.ac | 112 |
| cloud.ac | 108 |
| kaist.ac | 102 |
| strath.ac | 92 |
| 110v.ac | 89 |
| vps.ac | 89 |
| samarth.ac | 89 |
| tums.ac | 87 |
| 120v.ac | 83 |
| movie.ac | 82 |
| onl.ac | 81 |
| msu.ac | 81 |
| mmu.ac | 78 |
| unpas.ac | 75 |
| trades.ac | 73 |
| wac.ac | 73 |
| wsu.ac | 72 |
| jmi.ac | 71 |
| window.ac | 71 |
| najm.ac | 70 |
| westwerk.ac | 67 |
| uwc.ac | 67 |
| ether.ac | 67 |
| um5.ac | 66 |
Top Certificate Issuers
No TLS certs seen
scan_tls_certs doesn't yet contain a certificate whose SAN ends in .ac.
Top Hosting ASNs
No hosting attribution yet
Forward-DNS crawler hasn't resolved enough .ac apexes to BGP-attributable IPs.
Tech-Stack Distribution
No Wappalyzer detections
Body-fetcher hasn't covered enough .ac sites yet for stack patterns to emerge.
Most-resolved apex domains
Apexes resolving to the most distinct A/AAAA records — popularity proxy.
| Apex | Distinct IPs |
|---|---|
| metademy.ac | 39 |
| stage-vision-davivienda-clientes.dav.ac | 24 |
| ava.kb.proj.ac | 24 |
| www.metademy.ac | 24 |
| portal.fairfield.ac | 20 |
| home.taylor.ac | 20 |
| 78w.ac | 20 |
| 38w.ac | 20 |
| 88w.ac | 20 |
| cse.google.ac | 20 |
| int.api.octopus.ac | 19 |
| google.ac | 18 |
| akt.ac | 16 |
| animedao.ac | 16 |
| www.akt.ac | 16 |
| ank.ac | 16 |
| 789bet.ac | 14 |
| catalogue.ac | 14 |
| dodo.ac | 12 |
| www.ninja.ac | 12 |
| dl-raw.ac | 12 |
| faq-page.questar.ac | 12 |
| m.ac | 12 |
| static.okx.ac | 12 |
| swap.ac | 12 |
ℹ Coverage will improve significantly once CZDS zone-file access is granted for this TLD.