usaco.org
Observed 2026-06-13T08:25:40.634Z (3h ago). Every field below was attested with an Ed25519 signature at scan time.
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Verify this receiptEd25519 Receipt
- Receipt ID
b6b5bb23-3828-4aa1-b2f4-6ee975f593c1- Output Hash
d2cb9866fb7b37296132af0a705ce34c646688432c6c90d65a1533b99fa0fa03- Signature
ed25519:0731afdee3aceda9a356353dcf1205ecbced47341a1b9bf7848ee89f67f70b73a64c328592b75a9f4f9c6948bd50cd289c1c40b5402106f3f32647628789740d- Public Key
ed25519:d3f6015a95abdad7e8166ad80938a5885500170bb75f8cdb425b8fd2772bec29- Parent
(genesis)- Plane
- fast
DNS Records
A 2
104.21.78.228172.67.137.226
AAAA 2
2606:4700:3035::6815:4ee42606:4700:3030::ac43:89e2
TXT 3
google-gws-recovery-domain-verification=49071871v=spf1 ip4:130.127.0.0/16 a:clemson.edu ~allv=DMARC1; p=none; rua=mailto:usaco_email@lists.clemson.edu
NS 2
andronicus.ns.cloudflare.comaurora.ns.cloudflare.com
SOA 1
{"mname":"andronicus.ns.cloudflare.com","rname":"dns.cloudflare.com","serial":2404641269,"refresh":10000,"retry":2400,"expire":604800,"minimum":1800}
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
usaco.org |
C=US, O=Google Trust Services, CN=WE1 | Mon, 17 Aug 2026 01:51:13 +0000 |
WE1 |
C=US, O=Google Trust Services LLC, CN=GTS Root R4 | Tue, 20 Feb 2029 14:00:00 +0000 |
GTS Root R4 |
C=BE, O=GlobalSign nv-sa, 2.5.4.11=Root CA, CN=GlobalSign Root CA | Fri, 28 Jan 2028 00:00:42 +0000 |
Subdomains (0)
None observed.