mastertools.nl

Observed Aug 12, 2026, 04:41 UTC (3d ago). Every field below was attested with an Ed25519 signature at scan time.

This reading of mastertools.nl was taken 3d ago

mastertools.nl is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting mastertools.nl 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 mastertools.nl Watching a domain needs a DRM3 account. The reading above stays free and public either way.

Verify this receipt yourself + Watch this domain

Up right now

Email byGoogle Workspace

Secured byLet's Encrypt

Also usesMicrosoft 365Google Search Console

tranco

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat mastertools.nl actually stands on - every host below is a signed observation

mastertools.nl

A / AAAA

216.150.1.1

unattributedserves the site

cheryl.ns.cloudflare.comwill.ns.cloudflare.com

cloudflare.comanswers its DNS

aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.commastertools-nl.mail.protection.outlook.com+2 more

Google Workspacereceives its email

TLS

mastertools.nl

Let's Encryptissued its certificate

DNS Records

A 1

216.150.1.1

MX 6

1aspmx.l.google.com
10alt3.aspmx.l.google.com
10alt4.aspmx.l.google.com
2mastertools-nl.mail.protection.outlook.com
5alt1.aspmx.l.google.com
5alt2.aspmx.l.google.com

TXT 6

MS=ms66044289
MS=ms92806920
google-site-verification=7VSv3e3M78_FhlR1ryrgYFlaVDGSwQDbSR2MhNwAot4
google-site-verification=nfUZ0LqbreevSeVm_vNjsnzjcHo1LNCQom8M-j_lzrE
google-site-verification=tS6PyGhqJU9RPCrYJ4MlrnwFqCfC-5PJQiQ6815sAZA
v=spf1 ip4:23.227.38.65 include:_spf.google.com include:spf.monta.nl include:trustpilotservice.com include:_spf.supportbyrobin.com include:_spf.exactonline.nl include:spf.flowmailer.net ~all

NS 2

cheryl.ns.cloudflare.com
will.ns.cloudflare.com

SOA 1

cheryl.ns.cloudflare.com dns.cloudflare.com

DMARC_RECORDS 1

v=DMARC1; p=none; rua=mailto:65f2a198c65f1@ag.dmarcly.com; ruf=mailto:65f2a198c65f1@fo.dmarcly.com; sp=none;

MTA_STS_RECORDS 1

v=STSv1; id=1765979481959

TLS Certificates (3)

Common Name	Issuer	Expires
`mastertools.nl`	C=US, O=Let's Encrypt, CN=YR2	Mon, 26 Oct 2026 12:42:18 +0000
`YR2`	C=US, O=ISRG, CN=Root YR	Sat, 02 Sep 2028 23:59:59 +0000
`Root YR`	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; the only network request the check makes is for the published public keys.

Verify this receipt

Ed25519 Receipt

Receipt ID: rcpt_fd80ddf5e6ac03ed
Output Hash: 494f143720967acf9edc3929ace23ffae2e0dc456b4521dd2bc4c00cee2d66d9
Signature: ed25519:e7aa0d1fa931c63722eadc6cb356061e5613675f0ea1458128563416637993c42d69e263c7a16555d6559f31bbda8aaec801b964c6cff9babc9145cc9705cb0a
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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