up.net
Observed Aug 2, 2026, 09:07 UTC (3h ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation - watch it for 5-minute checks.
Up right now
Email byMailchimp
Secured byLet's Encrypt
IPv6 · 1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat up.net actually stands on - every host below is a signed observation
up.net
A / AAAA
206.51.127.542001:4a0:0:2::54
2001serves the site
NS
ns1.up.netns2.up.net
up.netanswers its DNS
MX
mx1.emailsrvr.commx2.emailsrvr.com
Mailchimpreceives its email
TLS
up.net
Let's Encryptissued its certificate
DNS Records
A 1
206.51.127.54
AAAA 1
2001:4a0:0:2::54
MX 2
10mx1.emailsrvr.com20mx2.emailsrvr.com
TXT 5
duo_sso_verification=x5uTSwtUUxAsp9vAIbMqIrE4VwPmIjVDicIBn94HiU2iDxsevYe8SeZTqo2qpsX0knowbe4-site-verification=74176b0839848f8fdd7617dfc6d653ca00D5Y000002WB1U=1TBPm0000000Stxv=spf1 ip4:206.51.112.0/20 ip4:68.70.128.0/20 ip4:69.19.168.0/21 ip6:2001:4A0::/32 include:emailsrvr.com include:baragatelephone.com include:charter.net include:chartermi.net include:servers.mcsv.net include:shops.shopify.com include:sogosurveys.com ~allMS=ms47116110
NS 2
ns1.up.netns2.up.net
SOA 1
ns1.up.net dns.up.net
DMARC_RECORDS 1
v=DMARC1; p=reject; rua=mailto:dmarc@up.net
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
up.net |
C=US, O=Let's Encrypt, CN=YE1 | Sat, 05 Sep 2026 18:01:53 +0000 |
YE1 |
C=US, O=ISRG, CN=Root YE | Sat, 02 Sep 2028 23:59:59 +0000 |
Root YE |
C=US, O=Internet Security Research Group, CN=ISRG Root X2 | Thu, 02 Sep 2032 23:59:59 +0000 |
ISRG Root X2 |
C=US, O=Internet Security Research Group, CN=ISRG Root X1 | Thu, 02 Sep 2032 23:59:59 +0000 |
Subdomains (1)
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 receiptEd25519 Receipt
- Receipt ID
rcpt_ee7d29035c8b0d81- Output Hash
df34afb373e793cf749c15bdc539ccf2cd23178e921f30305961cc51e427f89c- Signature
ed25519:76a8d1d33f2cd67755a16a381bfac589630417ba9fa7099818bf4e131c49e2f9a553d8be58a9e15b9ae67502c3e5d67b4cb1fb551edd3b5fadb6d6d2dde42b0d- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast