4in.co.kr
Observed Jul 17, 2026, 14:13 UTC (4d ago). Every field below was attested with an Ed25519 signature at scan time.
Not responding
Signed observation on record.
tranco_40k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat 4in.co.kr actually stands on - every host below is a signed observation
4in.co.kr
A / AAAA
221.165.139.14
unattributedserves the site
NS
ns1.4in.co.krns2.4in.co.kr
4in.co.kranswers its DNS
MX
mail.4in.co.kr
4in.co.krreceives its email
DNS Records
A 1
221.165.139.14
MX 1
10mail.4in.co.kr
TXT 1
v=spf1 include:_spf1.mailnara.co.kr include:_spf2.mailnara.co.kr include:_spf3.mailnara.co.kr include:_spf4.mailnara.co.kr include:_spf5.mailnara.co.kr ~all
NS 2
ns1.4in.co.krns2.4in.co.kr
SOA 1
4in.co.kr rname.invalid
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 receiptEd25519 Receipt
- Receipt ID
0fd35175-e8c9-45d9-a1ed-af9e8bd38294- Output Hash
af35577ab1105985c33cf23d9d34ca8ea8736c52f6757926109c22df0ff7940c- Signature
ed25519:035c5d907355afc808da0cb1b3ace1ab7924cb9c214efde48c5973188a0532f58925caa1dc807c3145d34eb8e88aa40f90bad7e80290d761a6896854861f0201- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast