alkalaersunivers.dk

📜 Historical scan 2026-06-16 12:41:40  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

alkalaersunivers.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 5 October 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.20.205.42 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx.simply.com, mxa.eu.mailgun.org and 1 more. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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   52ms
NameserverIP addressesPTRASN / ISP
ns1.simply.com — — —
ns2.simply.com — — —
ns3.simply.com — — —
ns4.simply.com — — —

🌍 A Records#

1 records   47ms
IPTTLPTRASNISP / OrgCIDRCountryCity
185.20.205.42 — linux368.unoeuro.com AS48854 team.blue Denmark A/S 185.20.204.0/22 🇩🇰 Denmark —

📧 MX Records#

3 records   48ms
PriorityTTLMail ServerIP addressesPTRASN
10 — mx.simply.com 94.231.106.20 mx.simply.com AS48854 team.blue Denmark A/S
10 — mxa.eu.mailgun.org 34.111.130.244 244.130.111.34.bc.googleusercontent.com AS396982 Google LLC
10 — mxb.eu.mailgun.org 34.111.130.244 244.130.111.34.bc.googleusercontent.com AS396982 Google LLC

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

4 records   141ms
TXT Record
google-site-verification=djApWJ6i4qxpOJpvNmnTpeLkhDr8UO-_T5CAWSK6n5
google-site-verification=djApWJ6i4qxpOJpvNmnTpeLkhDr8UO-_T5CAWSK6n5I
v=spf1 include:mailgun.org ~all
v=spf1 include:spf.simply.com -all

✉️ SPF#

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)
PolicyRecord (alkalaersunivers.dk)
~all (soft fail) v=spf1 include:mailgun.org ~all
-all (hard fail) v=spf1 include:spf.simply.com -all

📨 DMARC#

PolicyRecord (_dmarc.alkalaersunivers.dk)
p=reject v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com;

📬 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 2026-10-11 00:30:15
www104.21.17.179 172.67.177.191 2606:4700:3030::6815:11b3 2606:4700:3031::ac43:b1bf (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardYes: any name under the zone resolves

✍️ DKIM keys#

1 found
SelectorCNAMEKey
s1 — RSA · ~1024 bit below 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: 5/10 · policy: ~all

  • error 2 SPF records: receivers must treat that as a permanent error (RFC 7208 §4.5)

🔗 TLSA / DANE#

2 records   2042ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 A9D603AF4D7ED6B9246B4B68500CD6F2…
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 97A3BA009F39C761BFFB6574340E8138…

🔐 DNSSEC#

147ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

50ms
FieldValue
Serial2025042300
Primary NS (MNAME)ns1.simply.com
Responsible (RNAME)hostmaster@simply.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)3600s

📋 Registration#

WHOIS fetched 2026-10-12 06:50:32
FieldValue
RegistrarSimply.com A/S
Registered2021-10-05
Expires2027-10-04 (344d)

🔗 Same registrant#

4 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).

DomainRegistrar
alkalærsordbog.dkSimply.com A/S
læseuniverset.dkSimply.com A/S
matematiktrappen.dkSimply.com A/S
stavetrappen.dkSimply.com A/S
📋 WHOIS#

⏱️ Lookup Timing#

NS
52ms
A
47ms
MX
48ms
AAAA
47ms
TXT
141ms
CAA
48ms
HTTPS
48ms
TLSA
2042ms
SOA
50ms
MTA-STS
31ms
DNSSEC
147ms
SRV
0ms
Total
2809ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-02 10:09:33 1022ms 2 NS 2 A 3 MX 🔓 Insecure
2026-09-25 08:55:28 863ms 4 NS 1 A 3 MX 🔒 Secure
2026-09-12 20:31:07 1002ms 4 NS 1 A 3 MX 🔒 Secure
2026-08-28 11:21:36 995ms 4 NS 1 A 3 MX 🔒 Secure
2026-06-23 01:59:59 714ms 4 NS 1 A 3 MX 🔒 Secure
2026-06-22 09:05:00 1113ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-16 12:41:40 shown 2809ms 4 NS 1 A 3 MX 🔒 Secure
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