sahlmann.dk

📜 Historical scan 2026-08-31 15:42:48  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sahlmann.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 2 December 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 188.228.54.119 is hosted by Altibox Danmark AS (AS214875) in Denmark. Mail is handled by mail.7a.dk. 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#

4 records   31ms
NameserverIP addressesPTRASN / ISP
ns1.simply.com 2a02:2339:1:15c::4562:4562
91.197.248.78		 ns1.simply.com
ns1.simply.com		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
ns2.simply.com 185.25.141.15
2a02:2339:4006:101::4562:4562		 ns2.simply.com
ns2.simply.com		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
ns3.simply.com 91.197.248.79 ns3.simply.com AS48854 team.blue Denmark A/S
ns4.simply.com 91.197.248.80 ns4.simply.com AS48854 team.blue Denmark A/S

🌍 A Records#

1 records   27ms
IPTTLPTRASNISP / OrgCIDRCountryCity
188.228.54.119 3600s 188.228.54.119.dynamic.altibox.net AS214875 Altibox Danmark AS 188.228.54.0/24 🇩🇰 Denmark Give

📧 MX Records#

1 records   26ms
PriorityTTLMail ServerIP addressesPTRASN
0 3600s mail.7a.dk 188.228.54.119
2a00:fd01:8146:3d00::30		 188.228.54.119.dynamic.altibox.net
—		 AS214875 Altibox Danmark AS
AS214875 Altibox Danmark AS

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscover188.228.54.119
🔶 Autoconfig188.228.54.119

🔷 AAAA Records (IPv6)#

1 records   26ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a00:fd01:8146:3d00:215:5dff:fe02:6d04 600s — AS214875 Altibox Danmark AS 2a00:fd01:0:0:0:0:0:0/32 🇩🇰 Denmark Holstebro

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records   808ms
TXT Record
v=spf1 include:spf.mailjet.com include:spf.simply.com -all

✉️ SPF#

PolicyRecord (sahlmann.dk)
-all (hard fail) v=spf1 include:spf.mailjet.com include:spf.simply.com -all

📨 DMARC#

PolicyRecord (_dmarc.sahlmann.dk)
p=none (monitor only) v=DMARC1; p=none;

📬 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 2026-10-09 09:29:26
www188.228.54.119 (AS214875) (address records, no CNAME)
www vs bare domainSame network
sahlmann.dk: 188.228.54.119 (AS214875)
www.sahlmann.dk: 188.228.54.119 (AS214875)
WildcardYes: any name under the zone resolves
Denial of existenceNSEC zone can be walked (all names enumerable)
CDS / CDNSKEYPublished: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

2 found
SelectorCNAMEKey
s1 s1.domainkey.u27356220.wl221.sendgrid.net RSA · ~2048 bit
s2 s2.domainkey.u27356220.wl221.sendgrid.net RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔏 ACME Challenge#

TypeNameValue
CNAME _acme-challenge.sahlmann.dk 7f5eaf5f-372b-4d59-9a62-cc4197cbe011.c-8a1f.tx.auth.certifytheweb.com
TXT 7f5eaf5f-372b-4d59-9a62-cc4197cbe011.c-8a1f.tx.auth.certifytheweb.com esy1UUl1a3QSvDw9irJNbdZgCz976OpWl04L_WCphYk
TXT 7f5eaf5f-372b-4d59-9a62-cc4197cbe011.c-8a1f.tx.auth.certifytheweb.com n0RX1ExZVbWLiNrTTDuSdwJxQheaaUak4tH_Oi17c28

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

100ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

0ms
FieldValue
Serial2026083103
Primary NS (MNAME)ns1.simply.com
Responsible (RNAME)hostmaster@simply.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)3600s

📋 Registration#

WHOIS fetched 2026-10-11 22:24:06
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2015-12-02
Expires2026-12-31 (74d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
31ms
A
27ms
MX
26ms
AAAA
26ms
TXT
808ms
CAA
25ms
HTTPS
29ms
TLSA
89ms
SOA
0ms
MTA-STS
34ms
DNSSEC
100ms
SRV
31ms
Total
1243ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-09 09:29:26 973ms 4 NS 1 A 1 MX 🔒 Secure
2026-10-08 17:36:56 1200ms 4 NS 1 A 1 MX 🔒 Secure
2026-10-03 05:32:37 1061ms 4 NS 1 A 1 MX 🔒 Secure
2026-10-02 17:52:07 1207ms 4 NS 1 A 1 MX 🔒 Secure
2026-09-30 17:50:22 1190ms 4 NS 1 A 1 MX 🔒 Secure
2026-09-24 14:28:31 1085ms 4 NS 1 A 1 MX 🔒 Secure
2026-09-03 13:51:12 1111ms 4 NS 1 A 1 MX 🔒 Secure
2026-08-31 15:42:48 shown 1243ms 4 NS 1 A 1 MX 🔒 Secure
2026-08-30 13:54:28 958ms 4 NS 0 A 1 MX 🔒 Secure
2026-08-28 21:17:54 1855ms 4 NS 1 A 1 MX 🔒 Secure
2026-08-06 01:23:35 2357ms 4 NS 1 A 1 MX 🔒 Secure
2026-06-29 10:00:45 1265ms 4 NS 1 A 1 MX 🔒 Secure
2026-06-26 04:04:22 1338ms 4 NS 1 A 1 MX 🔒 Secure
2026-06-21 16:10:30 940ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-17 11:53:44 648ms 4 NS 1 A 1 MX 🔒 Secure
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