acmicpc.net
Observed 2026-07-14T13:46:59.679Z (2d ago). Every field below was attested with an Ed25519 signature at scan time.
Up right now
Runs onCloudflare
Email byGoogle Workspace
Registered withGoDaddy.com, LLC
Also usesGoogle Search ConsoleFacebook/Meta
96 subdomains · tranco_40k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat acmicpc.net actually stands on - every host below is a signed observation
acmicpc.net
A / AAAA
3.168.86.853.168.86.1143.168.86.983.168.86.102
Cloudflareserves the site
NS
ns-1102.awsdns-09.orgns-325.awsdns-40.comns-565.awsdns-06.netns-1947.awsdns-51.co.uk
awsdns-09.org + awsdns-40.com + moreanswers its DNS
MX
alt2.aspmx.l.google.comaspmx.l.google.comaspmx3.googlemail.comalt1.aspmx.l.google.com+1 more
Google Workspacereceives its email
HTTPS probe
redirect
Redirecting (3xx) 301 → https://www.acmicpc.net/
HTTP status301
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time21 ms
DNS resolutionNOERROR
Redirect chain
https://www.acmicpc.net/Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".
DNS Records
A 4
3.168.86.853.168.86.1143.168.86.983.168.86.102
MX 5
30alt2.aspmx.l.google.com10aspmx.l.google.com50aspmx3.googlemail.com20alt1.aspmx.l.google.com40aspmx2.googlemail.com
TXT 5
google-site-verification=p5HLwK3wIWPEPmhOLITi873sbcWQHJ89ds_maPK-vk8status-page-domain-verification=t6kgx4hqwcchfacebook-domain-verification=6fgd2v1zkwuz923f3ob4l0ukdz3yrdv=spf1 include:stspg-customer.com ~allv=DMARC1; p= none; sp=reject; rua=mailto:contacts@startlink.io; ruf=mailto:contacts@startlink.io;
NS 4
ns-1102.awsdns-09.orgns-325.awsdns-40.comns-565.awsdns-06.netns-1947.awsdns-51.co.uk
SOA 1
ns-565.awsdns-06.net awsdns-hostmaster.amazon.com
TLS Certificates (0)
None.
Subdomains (96)
- accounts.acmicpc.net
- admin.acmicpc.net
- api.acmicpc.net
- app.acmicpc.net
- assets.acmicpc.net
- auth.acmicpc.net
- beta.acmicpc.net
- billing.acmicpc.net
- blog.acmicpc.net
- build.acmicpc.net
- cache.acmicpc.net
- canary.acmicpc.net
- cashew.acmicpc.net
- cashew.dns.acmicpc.net
- cdn.acmicpc.net
- checkout.acmicpc.net
- ci.acmicpc.net
- connect.acmicpc.net
- connor.acmicpc.net
- connor.dns.acmicpc.net
- console.acmicpc.net
- dashboard.acmicpc.net
- db.acmicpc.net
- demo.acmicpc.net
- dev.acmicpc.net
- dns.acmicpc.net
- docs.acmicpc.net
- edge.acmicpc.net
- explorer.acmicpc.net
- explorer.dns.acmicpc.net
- faq.acmicpc.net
- gateway.acmicpc.net
- git.acmicpc.net
- gitlab.acmicpc.net
- grafana.acmicpc.net
- graphql.acmicpc.net
- grpc.acmicpc.net
- health.acmicpc.net
- help.acmicpc.net
- id.acmicpc.net
- images.acmicpc.net
- imap.acmicpc.net
- img.acmicpc.net
- ingest.dns.acmicpc.net
- jenkins.acmicpc.net
- kb.acmicpc.net
- login.acmicpc.net
- m.acmicpc.net
- mail.acmicpc.net
- media.acmicpc.net
The proof
Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.
Verify this receiptPut the receipt on your own site. A live badge showing what DomainDrift observes and signs for acmicpc.net. It updates itself. It attests a signed observation - not that the site is safe.
<a href="https://domaindrift.io/t/acmicpc.net">
<img src="https://domaindrift.io/badge/acmicpc.net.svg"
width="300" height="64" alt="DomainDrift signed observations for acmicpc.net">
</a>
Ed25519 Receipt
- Receipt ID
4d02de9b-696a-43ae-96e7-a06023008c5c- Output Hash
a641d8f409139d452f1cb19daa31248e1ec9e5327ee522c4ae991b4c13e1bf1c- Signature
ed25519:6d5f2bf4f10df70506d891f7caeb9dc12b44261b8d57cbaa1373da4d418bf7758cbf9ae0c57f6a9ad438e488bb5319bcf9ebdfd7d7926a88b0abc2104139050f- Public Key
ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b- Parent
(genesis)- Plane
- fast