sylvester-co.dk

Records from scan: 2026-10-14 08:42:56  ·  1595ms total  ·  last checked 2026-10-17 13:07 (unchanged)
⬇ 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.mailpod16-cph3.g1i.one.com, mx2.mailpod16-cph3.g1i.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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records   340ms
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   183ms
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   335ms
PriorityTTLMail ServerIP addressesPTRASN
10 10800s mx1.mailpod16-cph3.g1i.one.com 5.249.232.33 mx1.mailpod16-cph3.g1i.one.com AS51468 One.com A/S
10 10800s mx2.mailpod16-cph3.g1i.one.com 5.249.232.34 mx2.mailpod16-cph3.g1i.one.com AS51468 One.com A/S
10 10800s mx3.mailpod16-cph3.g1i.one.com 5.249.232.35 mx3.mailpod16-cph3.g1i.one.com AS51468 One.com A/S
10 10800s mx4.mailpod16-cph3.g1i.one.com 5.249.232.36 mx4.mailpod16-cph3.g1i.one.com AS51468 One.com A/S

🔷 AAAA Records (IPv6)#

1 records   338ms
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   517ms
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#

checked 2026-10-14 08:42:56
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   184ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx1.mailpod16-cph3.g1i.one.com DANE-EE · SPKI · SHA-256 2362DFAC1BB9F66402E0636BDEF478E5…
SMTP _25._tcp.mx2.mailpod16-cph3.g1i.one.com DANE-EE · SPKI · SHA-256 2362DFAC1BB9F66402E0636BDEF478E5…
SMTP _25._tcp.mx3.mailpod16-cph3.g1i.one.com DANE-EE · SPKI · SHA-256 2362DFAC1BB9F66402E0636BDEF478E5…
SMTP _25._tcp.mx4.mailpod16-cph3.g1i.one.com DANE-EE · SPKI · SHA-256 2362DFAC1BB9F66402E0636BDEF478E5…

🔐 DNSSEC#

436ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

69ms
FieldValue
Serial2026101301
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s

📋 Registration#

WHOIS fetched 2026-10-11 06:07:13
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2011-10-20
Expires2026-10-31 (13d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
340ms
A
183ms
MX
335ms
AAAA
338ms
TXT
517ms
CAA
321ms
HTTPS
58ms
TLSA
184ms
SOA
69ms
MTA-STS
362ms
DNSSEC
436ms
SRV
350ms
Total
1595ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-14 08:42:56 shown 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 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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