masterbuilder.kr
Observed Aug 10, 2026, 20:17 UTC (4d ago). Every field below was attested with an Ed25519 signature at scan time.
masterbuilder.kr is on the survey sweep, which works its way across the whole catalog rather than returning to one name on a schedule. Putting masterbuilder.kr 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 masterbuilder.kr Watching a domain needs a DRM3 account. The reading above stays free and public either way.
AmazonDomainDrift asked this domain for a TXT record at a name nobody registers, and got an answer back. A domain that answers a name that was never created is answering names in general, and that is wildcard DNS.
Wildcard DNS clusters around domain parking, dynamic DNS and catch-all hosting. It is also a real attack surface: if every invented hostname resolves, then a hostname an attacker invents resolves too, which is the ground state for subdomain takeover and for phishing hosted under a name that looks legitimate.
This is evidence of wildcard behaviour, not a proven fact. It rests on one control name: a domain could legitimately serve a TXT record at exactly that name for an unrelated reason, and a wildcard that answers address records but not TXT records would not be caught here at all. What this reading is and is not.
DNS Records
A 4
13.226.209.2613.226.209.10613.226.209.10313.226.209.3
AAAA 8
2600:9000:201d:2a00:c:d5a0:1540:93a12600:9000:201d:9200:c:d5a0:1540:93a12600:9000:201d:9000:c:d5a0:1540:93a12600:9000:201d:a00:c:d5a0:1540:93a12600:9000:201d:f800:c:d5a0:1540:93a12600:9000:201d:b400:c:d5a0:1540:93a12600:9000:201d:ae00:c:d5a0:1540:93a12600:9000:201d:8600:c:d5a0:1540:93a1
MX 1
10uws64-091.cafe24.com
TXT 1
v=spf1 ip4:112.175.247.164 ~all
NS 2
adrian.ns.cloudflare.comryan.ns.cloudflare.com
SOA 1
adrian.ns.cloudflare.com dns.cloudflare.com
MCP_RECORDS 1
v=spf1 ip4:112.175.247.164 ~all
DMARC_RECORDS 1
v=spf1 ip4:112.175.247.164 ~all
BIMI_RECORDS 1
v=spf1 ip4:112.175.247.164 ~all
MTA_STS_RECORDS 1
v=spf1 ip4:112.175.247.164 ~all
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
masterbuilder.kr |
C=US, O=Amazon, CN=Amazon RSA 2048 M01 | Fri, 23 Oct 2026 23:59:59 +0000 |
Amazon RSA 2048 M01 |
C=US, O=Amazon, CN=Amazon Root CA 1 | Fri, 23 Aug 2030 22:21:28 +0000 |
Amazon Root CA 1 |
C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Services Root Certificate Authority - G2 | Thu, 31 Dec 2037 01:00:00 +0000 |
Subdomains (2)
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 receiptEd25519 Receipt
- Receipt ID
rcpt_142bd506b45655b9- Output Hash
06bcfe77b17640e0d12691a5168fe14ad020bb52f0b87ecdbf15cec72566f5a3- Signature
ed25519:207dd2d9660d6b13941dff5b0c976f78045568f77a8fba215ca84776811ed899b0c6948f9300ecd91196a5fce769f2d7e3f712f7cfb8dae68bdf12ce3554c107- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast