sylvester-co.dk

📜 Historical scan 2026-07-16 17:28:01  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sylvester-co.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 20 October 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.240.132 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.pub.mailpod12-cph3.one.com, mx2.pub.mailpod12-cph3.one.com and 2 more. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records   101ms
NameserverIP addressesPTRASN / ISP
ns01.one.com 195.206.121.10
2001:67c:28cc::10		 ns01.one.com
ns01.one.com		 AS197495 One.com A/S
AS197495 One.com A/S
ns02.one.com 185.10.11.10
2001:67c:3c0::10		 ns02.one.com
ns02.one.com		 AS51468 One.com A/S
AS51468 One.com A/S

🌍 A Records#

1 records   89ms
IPTTLPTRASNISP / OrgCIDRCountryCity
77.111.240.132 3600s webcluster5.webpod11-cph3.one.com AS51468 One.com A/S 77.111.240.0/22 🇩🇰 Denmark Copenhagen

📧 MX Records#

4 records   96ms
PriorityTTLMail ServerIP addressesPTRASN
10 10800s mx1.pub.mailpod12-cph3.one.com 104.37.34.246 mx1.pub.mailpod12-cph3.one.com AS51468 One.com A/S
10 10800s mx2.pub.mailpod12-cph3.one.com 104.37.34.247 mx2.pub.mailpod12-cph3.one.com AS51468 One.com A/S
10 10800s mx3.pub.mailpod12-cph3.one.com 104.37.34.248 mx3.pub.mailpod12-cph3.one.com AS51468 One.com A/S
10 10800s mx4.pub.mailpod12-cph3.one.com 104.37.34.249 mx4.pub.mailpod12-cph3.one.com AS51468 One.com A/S

🔷 AAAA Records (IPv6)#

1 records   87ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a02:2350:5:102:22:949d:6c5a:e69a 3600s — AS51468 One.com A/S 2a02:2350:0:0:0:0:0:0/32 🇩🇰 Denmark Copenhagen

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records   732ms
TXT Record
v=spf1 include:_custspf.one.com ~all

✉️ SPF#

PolicyRecord (sylvester-co.dk)
~all (soft fail) v=spf1 include:_custspf.one.com ~all

📨 DMARC#

PolicyRecord (_dmarc.sylvester-co.dk)
p=quarantine v=DMARC1; p=quarantine; rua=mailto:no-reply@sylvester-co.dk

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-20 16:06:05
www77.111.240.132 2a02:2350:5:102:22:949d:6c5a:e69a (AS51468) (address records, no CNAME)
www vs bare domainSame network
WildcardNo
Denial of existenceNSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

4 records   117ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx1.pub.mailpod12-cph3.one.com DANE-EE · SPKI · SHA-256 3E81C76D10E1A717F28178710EADCAA8…
SMTP _25._tcp.mx2.pub.mailpod12-cph3.one.com DANE-EE · SPKI · SHA-256 3E81C76D10E1A717F28178710EADCAA8…
SMTP _25._tcp.mx3.pub.mailpod12-cph3.one.com DANE-EE · SPKI · SHA-256 3E81C76D10E1A717F28178710EADCAA8…
SMTP _25._tcp.mx4.pub.mailpod12-cph3.one.com DANE-EE · SPKI · SHA-256 3E81C76D10E1A717F28178710EADCAA8…

🔐 DNSSEC#

226ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

0ms
FieldValue
Serial2026071301
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s

📋 Registration#

WHOIS fetched 2026-10-20 16:19:55
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2011-10-20
Expires2026-10-31 (10d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet
📋 WHOIS#

⏱️ Lookup Timing#

NS
101ms
A
89ms
MX
96ms
AAAA
87ms
TXT
732ms
CAA
504ms
HTTPS
64ms
TLSA
117ms
SOA
0ms
MTA-STS
89ms
DNSSEC
226ms
SRV
513ms
Total
1647ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-20 16:06:05 599ms 2 NS 1 A 4 MX 🔒 Secure
2026-10-19 13:46:08 452ms 2 NS 1 A 4 MX 🔒 Secure
2026-10-14 08:42:56 1595ms 2 NS 1 A 4 MX 🔒 Secure
2026-10-11 05:38:27 886ms 2 NS 1 A 4 MX 🔒 Secure
2026-10-01 06:21:50 535ms 2 NS 1 A 4 MX 🔒 Secure
2026-09-30 05:47:14 598ms 2 NS 1 A 4 MX 🔒 Secure
2026-09-22 11:03:18 1174ms 2 NS 1 A 4 MX 🔒 Secure
2026-09-15 10:30:11 1832ms 2 NS 1 A 4 MX 🔒 Secure
2026-09-10 16:37:23 1259ms 2 NS 1 A 4 MX 🔒 Secure
2026-08-28 00:18:49 905ms 2 NS 1 A 4 MX 🔒 Secure
2026-08-27 07:33:50 834ms 2 NS 1 A 4 MX 🔒 Secure
2026-08-22 15:49:29 4976ms 2 NS 1 A 4 MX 🔒 Secure
2026-08-20 15:33:49 2218ms 2 NS 1 A 4 MX 🔒 Secure
2026-08-12 22:26:10 9005ms 2 NS 1 A 4 MX 🔒 Secure
2026-07-26 20:24:16 1098ms 2 NS 1 A 4 MX 🔒 Secure
2026-07-16 17:28:01 shown 1647ms 2 NS 1 A 4 MX 🔒 Secure
2026-07-09 03:00:43 1127ms 2 NS 1 A 4 MX 🔒 Secure
2026-06-29 20:31:04 796ms 2 NS 1 A 4 MX 🔒 Secure
2026-06-24 19:32:25 2115ms 2 NS 1 A 4 MX 🔒 Secure
2026-06-24 16:16:02 4137ms 2 NS 1 A 4 MX 🔒 Secure
2026-06-24 03:34:57 1172ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-18 06:01:33 716ms 2 NS 1 A 4 MX 🔒 Secure
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