arith-metic.jp

Observed Jul 27, 2026, 09:50 UTC (4d 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.

Verify this receipt yourself + Watch this domain

Up right now

Email byGoogle Workspace

Secured byLet's Encrypt

Also usesGoogle Search Console

1 subdomain · domcop

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

INFRASTRUCTURE MAPwhat arith-metic.jp actually stands on - every host below is a signed observation

arith-metic.jp

A / AAAA

157.7.107.31

unattributedserves the site

dns01.muumuu-domain.comdns02.muumuu-domain.com

muumuu-domain.comanswers its DNS

ASPMX4.GOOGLEMAIL.COMASPMX3.GOOGLEMAIL.COMALT1.ASPMX.L.GOOGLE.COMmx01.lolipop.jp+4 more

Google Workspacereceives its email

TLS

arith-metic.jp

Let's Encryptissued its certificate

DNS Records

A 1

157.7.107.31

MX 8

10ASPMX4.GOOGLEMAIL.COM
10ASPMX3.GOOGLEMAIL.COM
5ALT1.ASPMX.L.GOOGLE.COM
50mx01.lolipop.jp
1ASPMX.L.GOOGLE.COM
10ASPMX2.GOOGLEMAIL.COM
10ASPMX5.GOOGLEMAIL.COM
5ALT2.ASPMX.L.GOOGLE.COM

TXT 3

google-site-verification=3kLVqZonsnSfAn7cO83wTOHK9L_2trx8Iyh5qH09nW4
v=spf1 ip4:122.218.101.232 include:_spf.google.com ~all
v=spf1 include:_spf.lolipop.jp ~all

NS 2

dns01.muumuu-domain.com
dns02.muumuu-domain.com

SOA 1

dns01.muumuu-domain.com postmaster.arith-metic.jp

TLS Certificates (3)

Common Name	Issuer	Expires
`arith-metic.jp`	C=US, O=Let's Encrypt, CN=YR2	Tue, 08 Sep 2026 22:00:10 +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 (1)

www.arith-metic.jp

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 arith-metic.jp. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_f2457503ace11039
Output Hash: 0c5cd9d56551114c543eefc9c8d1e935924e71f9e7c4dfef4176fafabc064eff
Signature: ed25519:a45a338c5ef58e09e4767fb28fba4e675db4d2a0e69daab9e0640fbf1749a1322b24937a5a04ccfa9c8e314eada4f2c38fe82c05f1bfe7a4edd075ffe4fa8908
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/arith-metic.jp