sylvester-co.dk

📜 Historical scan 2026-06-24 16:16:02  ·  ← 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 77.111.240.183 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   88ms
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   158ms
IPTTLPTRASNISP / OrgCIDRCountryCity
77.111.240.183 3600s webcluster56.webpod11-cph3.one.com AS51468 One.com A/S 77.111.240.0/22 🇩🇰 Denmark Copenhagen

📧 MX Records#

4 records   61ms
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

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscover77.111.240.183
🔶 Autoconfig77.111.240.183

🔷 AAAA Records (IPv6)#

1 records   65ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a02:2350:5:102:80f8:3c4c:edc8:29fc 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   656ms
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   929ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx1.pub.mailpod12-cph3.one.com DANE-EE · SPKI · SHA-256 D91CB8AC124CB360F986182813BDF3FD…
SMTP _25._tcp.mx2.pub.mailpod12-cph3.one.com DANE-EE · SPKI · SHA-256 D91CB8AC124CB360F986182813BDF3FD…
SMTP _25._tcp.mx3.pub.mailpod12-cph3.one.com DANE-EE · SPKI · SHA-256 D91CB8AC124CB360F986182813BDF3FD…
SMTP _25._tcp.mx4.pub.mailpod12-cph3.one.com DANE-EE · SPKI · SHA-256 D91CB8AC124CB360F986182813BDF3FD…

🔐 DNSSEC#

773ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

173ms
FieldValue
Serial2026061205
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 (7d)

🔗 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
88ms
A
158ms
MX
61ms
AAAA
65ms
TXT
656ms
CAA
201ms
HTTPS
123ms
TLSA
929ms
SOA
173ms
MTA-STS
344ms
DNSSEC
773ms
SRV
2164ms
Total
4137ms

🕐 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 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 shown 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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