sej.co.jp

Observed Jul 18, 2026, 13:08 UTC (2d ago). Every field below was attested with an Ed25519 signature at scan time.

Not responding

Email bySendGrid

Also usesFacebook/Meta

tranco_20k

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

INFRASTRUCTURE MAPwhat sej.co.jp actually stands on - every host below is a signed observation

sej.co.jp

ns3.index.jpns2.index.jpns1.index.jp

index.jpanswers its DNS

i801.mailsecurity-nec.jp

SendGridreceives its email

DNS Records

MX 1

10i801.mailsecurity-nec.jp

TXT 7

pzp39WtJJg8Z97EsBliBs3Asm66ZHe
_globalsign-domain-verification=0-sQPfpKL_z5ODNPOUZX2khQ3r3-s70LkLoyz1b17d
ZEZKzUoT2srvm5UMN9nWs2QeIOq47q
v=spf1 include:spfmag.7andi.co.jp include:spfseoa.7andi.co.jp include:cust-spf.exacttarget.com include:sendgrid.net include:fc3139.cuenote.jp ~all
facebook-domain-verification=5pumf7a15itod6xntt7th2jbkzp611
53Kq82Hqgw1AiPEZV9KC2mn6CSpcnn
v=DMARC1; p=none

NS 3

ns3.index.jp
ns2.index.jp
ns1.index.jp

SOA 1

ns1.index.jp hostmaster.index.or.jp

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; nothing leaves your machine.

Verify this receipt

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

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

Ed25519 Receipt

Receipt ID: 1eb24bfe-8bbb-4e21-bf30-07b2864dd010
Output Hash: 753e664126cd4b9420cb36f4d8f176094e400cff52176a7f68da141a26086e0d
Signature: ed25519:de3ba4049fe32ce8dbb09d3b4d85bccac12e2257b3a9d706322312a4e43b14c3b1d30e7da262b0aba3a40b9630ddf400543ffedf61763f18a24d749ce400850e
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/sej.co.jp