medco.com

Observed Aug 10, 2026, 22:26 UTC (4d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of medco.com was taken 4d ago

medco.com is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting medco.com under watch moves it to the fast lane, where DomainDrift re-checks it about every 5 minutes and signs each reading, so a change becomes a dated event within minutes instead of waiting for the sweep to come round.

Watch medco.com Watching a domain needs a DRM3 account. The reading above stays free and public either way.
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Not responding
Email byProofpoint
Registered toExpress Scripts Strategic Development
Registered withMarkMonitor, Inc.
Also usesCiscoMicrosoft 365SscWebex
tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat medco.com actually stands on - every host below is a signed observation
medco.com
A / AAAA
167.211.52.102
unattributedserves the site
NS
ns05.express-scripts.comns04.express-scripts.com
express-scripts.comanswers its DNS
MX
mxb-000e5c18.gslb.pphosted.commxa-000e5c18.gslb.pphosted.com
Proofpointreceives its email

DNS Records

A 1

  • 167.211.52.102

MX 2

  • 10mxb-000e5c18.gslb.pphosted.com
  • 10mxa-000e5c18.gslb.pphosted.com

TXT 8

  • _s7gm5kbsts5f9mvi2mr57yxofr0nkka
  • webexdomainverification.4C675B8BE1B2B136E053AB06FC0A3F65=8f1d99aa-eb84-43d6-aff9-18e46971da62
  • MS=ms58241125
  • _mfdfnmuxg49zjt8ecw1xxsyn55c76ap
  • cisco-ci-domain-verification=f28eaa257b508775911d40d2e03523ee61302b99847fa02ece8e8c0c0419669
  • _mra934b2fug1rjz1g159xfhsfvptmaj
  • v=spf1 exists:%{i}.spf.evernorth.com -all
  • ssc-domain-verification=129525f4-78fd-50dc-8dea-1e01b0317741

NS 2

  • ns05.express-scripts.com
  • ns04.express-scripts.com

SOA 1

  • ps2igm01.express-scripts.com nsse.express-scripts.com

CAA 1

  • issue "digicert.com"

DMARC_RECORDS 1

  • v=DMARC1; p=reject; sp=reject; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com

TLS Certificates (0)

None.

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; the only network request the check makes is for the published public keys.

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Ed25519 Receipt

Receipt ID
rcpt_fe55cd51893c458e
Output Hash
049197af3fff407573389f325d1af0a89b8efa776b7a7c95a0200fe305e05d0c
Signature
ed25519:2f9ca41f8f10cd8f9cf035229da6f4abc6a4e0f0f9f118c52b52003fe9a0f6d00817ec607d002480e069763fe590c40d5753b475236c4dd287d71d8ee9f75d02
Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent
(genesis)
Plane
fast
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CONTINUOUS INTERNET TELEMETRY24H DRIFT42,433 material changesacross 40,727 domains · 24h to ~2h ago · -1,074 vs yesterdayROTATION62 domains moved DNS from koaladns.com to magpiedns.com, 60 moved backa rotation loop, not a migration · 24hNOW496 curated domains not reachablelast probe, steadySITE ERRORS36,439 sites serving errorslast probe · 5xx / 404 / TLSBOT DEFENSEbot defense observed on 117,245 sites429 rate-limit / 403 bot-block, a posture signal