CONTINUOUS INTERNET TELEMETRY24H DRIFT38,139 material changesacross 37,038 domains · 24h to ~3h ago · -2,721 vs yesterdayNOW554 curated domains not reachablelast probe, steadySITE ERRORS34,566 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 156,805 sites429 rate-limit / 403 bot-block, a posture signal

zyrtec.com

Observed Jul 27, 2026, 09:32 UTC (6d 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.

Guarded by a firewall
Secured byLet's Encrypt
Also usesGoogle Search Console
IPv6 · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat zyrtec.com actually stands on - every host below is a signed observation
zyrtec.com
A / AAAA
23.44.201.4523.44.201.722600:141b:e800:1d::17d8:84a72600:141b:e800:1d::17d8:848d
2600serves the site
NS
dns1.p01.nsone.netdns2.p01.nsone.netdns3.p01.nsone.netdns4.p01.nsone.net+4 more
nsone.net + kenvuedns.comanswers its DNS
TLS
zyrtec.com
Let's Encryptissued its certificate

DNS Records

A 2

  • 23.44.201.45
  • 23.44.201.72

AAAA 2

  • 2600:141b:e800:1d::17d8:84a7
  • 2600:141b:e800:1d::17d8:848d

TXT 4

  • SFMC-L-pJ5-Ti0WTmyW4kaFaKM5qfHMX3aEa5_iLT25QP
  • google-site-verification=V-aRaxAEZAw6o0hiXPVoKm2atcAN6LivGARy3DRjkFM
  • v=spf1 include:_u.zyrtec.com._spf.smart.ondmarc.com -all
  • v=DMARC1; p=reject; pct=100; sp=reject; rua=mailto:93881cb5@inbox.ondmarc.com; ruf=mailto:93881cb5@inbox.ondmarc.com; adkim=r; aspf=r; fo=1; rf=afrf; ri=3600

NS 8

  • dns1.p01.nsone.net
  • dns2.p01.nsone.net
  • dns3.p01.nsone.net
  • dns4.p01.nsone.net
  • ns01.kenvuedns.com
  • ns02.kenvuedns.com
  • ns03.kenvuedns.com
  • ns04.kenvuedns.com

SOA 1

  • dns1.p01.nsone.net hostmaster.nsone.net

TLS Certificates (4)

Common NameIssuerExpires
zyrtec.com C=US, O=Let's Encrypt, CN=YE1 Fri, 11 Sep 2026 06:44:28 +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 (0)

None observed.

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 receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for zyrtec.com. It updates itself. It attests a signed observation - not that the site is safe.

DomainDrift signed-observation badge for zyrtec.com <a href="https://domaindrift.io/t/zyrtec.com"> <img src="https://domaindrift.io/badge/zyrtec.com.svg" width="300" height="64" alt="DomainDrift signed observations for zyrtec.com"> </a>

Ed25519 Receipt

Receipt ID
rcpt_101ed4fa0177987a
Output Hash
4737e84c5c9a805c42f7eb22c0ce5ea966c737207582a8404558e0e5203d1a84
Signature
ed25519:c5676bbcec21a9eff544627b731ea45368afd3334b5ec91a83ee7dbe2092a1b2ce056d8fafd7cd80128b24802e5df8d3c4905a956d59d2f1757d74393508e108
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
Verify this in your browser