CONTINUOUS INTERNET TELEMETRY24H DRIFT3,013 material changesacross 2,663 domains · -385 vs yesterdayDNS DRIFT24 domains changed DNS providertop destination cloudflare.com · -3 vs yesterdayEMAIL DRIFT3 domains switched email providertop destination h-email.net · -3 vs yesterdayCERT DRIFT7 domains switched issuing CA24hNOW3,308 curated domains not answering-6,410 vs yesterdayERRORS10,957 responded with an errorlast probe · 5xx / 404 / 429 / 40324H DRIFT3,013 material changesacross 2,663 domains · -385 vs yesterdayDNS DRIFT24 domains changed DNS providertop destination cloudflare.com · -3 vs yesterdayEMAIL DRIFT3 domains switched email providertop destination h-email.net · -3 vs yesterdayCERT DRIFT7 domains switched issuing CA24hNOW3,308 curated domains not answering-6,410 vs yesterdayERRORS10,957 responded with an errorlast probe · 5xx / 404 / 429 / 403

core-mark.com

Observed 2026-07-12T18:57:09.942Z (16h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now
Runs onCloudflare
Registered withNetwork Solutions, LLC
Also usesAtlassian
fortune_500
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat core-mark.com actually stands on - every host below is a signed observation
core-mark.com
A / AAAA
52.234.233.148
Cloudflareserves the site
NS
pfgns2.pfgc.compfgns1.pfgc.com
pfgc.comanswers its DNS
MX
mx2.hc1981-4.iphmx.commx1.hc1981-4.iphmx.com
iphmx.comreceives its email

HTTPS probe

ok Responding normally (2xx) 200 OK
HTTP status200
Servercloudflare
TLS protocolHTTP/2
TLS issuernot observed
Behind Cloudflareyes
Response time80 ms
DNS resolutionNOERROR

Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".

DNS Records

A 1

  • 52.234.233.148

MX 2

  • 10mx2.hc1981-4.iphmx.com
  • 10mx1.hc1981-4.iphmx.com

TXT 9

  • v=spf1 include:SPF1.Core-Mark.com include:SPF2.Core-Mark.com ~all
  • smartsheet-site-validation=Lp_Cj_zxUoMGJMHz5EyqIM9WnfZWXw0A
  • zRQM8f3hpH5awJ81OIX2CuqE2uE3Snsl6Olsua7UyTgukD6/9jkEknGxpDsEjmLkKWt3e0d6hx247uFGN/yh7w==
  • MS=ms48771655
  • atlassian-domain-verification=tYPOOxPBaNoWLbMC66TyiZH8gio/25rHm4KdIjUd9y6yAonaW3a+1p8CaMQXu+WY
  • xrp9oCiT7QLPb2iovdTI0U/afIN2yKJsMyKDbOLDR/7XsVWGa2gMrlOyT7XcafnDs2VMx6MZ/6oCU+L6o0CV5w==
  • rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com;
  • logmein-verification-code=270538e3-8418-43e5-8512-be26b6c8f538
  • v=DMARC1; p=none; rua=mailto:blyjpigx@ag.us.dmarcian.com

NS 2

  • pfgns2.pfgc.com
  • pfgns1.pfgc.com

SOA 1

  • pfgns1.pfgc.com hostmaster.pfgns1.pfgc.com

TLS Certificates (0)

None.

Subdomains (2)

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 core-mark.com. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID
a9855e96-d4b3-4a11-b82e-f416c454b51e
Output Hash
4d3cc276155410e42b82f8b360f07e1e02803010fcbe7e5d67720d1f5f8b8a65
Signature
ed25519:cf7054d5c2642cd3ce726f5cae537d497bdbc12584630281518c5730d6588ffdcd0340c1892155ae5855089caebb70df84cf6165ec0c136dcdab54149d68ac0d
Public Key
ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent
(genesis)
Plane
fast
Verify this in your browser