grundstof.dk

📜 Historical scan 2026-07-10 07:09:55  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

grundstof.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 19 March 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.191.156.131 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mail.protonmail.ch, mx.simply.com and 1 more. The zone is not DNSSEC-signed, 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#

3 records   88ms
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

🌍 A Records#

1 records   81ms
IPTTLPTRASNISP / OrgCIDRCountryCity
93.191.156.131 3600s linux248.unoeuro.com AS48854 team.blue Denmark A/S 93.191.152.0/21 🇩🇰 Denmark —

📧 MX Records#

3 records   95ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mail.protonmail.ch 176.119.200.128
185.205.70.128
185.70.42.128		 mail.protonmail.ch
mail.protonmail.ch
mail.protonmail.ch		 AS62371 Proton AG
AS62371 Proton AG
AS62371 Proton AG
10 3600s mx.simply.com 94.231.106.20 mx.simply.com AS48854 team.blue Denmark A/S
20 3600s mailsec.protonmail.ch 176.119.200.129
185.205.70.129
185.70.42.129		 mailsec.protonmail.ch
mailsec.protonmail.ch
mailsec.protonmail.ch		 AS62371 Proton AG
AS62371 Proton AG
AS62371 Proton AG

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscover93.191.156.131
🔶 Autoconfigmaildiscover.simply.com → 94.231.108.222

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records   142ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 10 10 443 maildiscover.simply.com

📝 TXT Records#

3 records   358ms
TXT Record
protonmail-verification=e5cb9169c912de9a3e7e4af6750d8b9804037a24
v=spf1 include:_spf.protonmail.ch ~all
v=spf1 include:spf.simply.com -all

✉️ SPF#

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

📨 DMARC#

PolicyRecord (_dmarc.grundstof.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 2026-10-12 23:48:18
www93.191.156.131 (AS48854) (address records, no CNAME)
www vs bare domainSame network
grundstof.dk: 93.191.156.131 (AS48854)
www.grundstof.dk: 93.191.156.131 (AS48854)
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

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: ~all

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

🔗 TLSA / DANE#

6 records   213ms
Service / OwnerTypeCert association
SMTP _25._tcp.mail.protonmail.ch DANE-EE · SPKI · SHA-256 76BB66711DA416433CA890A5B2E5A053…
SMTP _25._tcp.mail.protonmail.ch DANE-EE · SPKI · SHA-256 6111A5698D23C89E09C36FF833C1487E…
SMTP _25._tcp.mailsec.protonmail.ch DANE-EE · SPKI · SHA-256 6111A5698D23C89E09C36FF833C1487E…
SMTP _25._tcp.mailsec.protonmail.ch DANE-EE · SPKI · SHA-256 76BB66711DA416433CA890A5B2E5A053…
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 97A3BA009F39C761BFFB6574340E8138…
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 A9D603AF4D7ED6B9246B4B68500CD6F2…

🔐 DNSSEC#

212ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✓ Found
Flagsunsigned answer

🏷️ SOA#

0ms
FieldValue
Serial2026070903
Primary NS (MNAME)ns1.simply.com
Responsible (RNAME)hostmaster@simply.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)3600s

📋 Registration#

WHOIS fetched 2026-10-20 22:39:34
FieldValue
RegistrarSimply.com A/S
Registered2005-03-19
Expires2027-03-31 (160d)

🔗 Same registrant#

8 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
cwebmusic.dkSimply.com A/S
danskbluesunion.dkSimply.com A/S
forlaget-grundstof.dkSimply.com A/S
forlagetgrundstof.dkSimply.com A/S
forlaggrundstof.dkSimply.com A/S
heymanmics.dkSimply.com A/S
lommefilosofferne.dkSimply.com A/S
radioblues.dkSimply.com A/S
📋 WHOIS#

⏱️ Lookup Timing#

NS
88ms
A
81ms
MX
95ms
AAAA
98ms
TXT
358ms
CAA
96ms
HTTPS
88ms
TLSA
213ms
SOA
0ms
MTA-STS
81ms
DNSSEC
212ms
SRV
142ms
Total
1550ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-12 23:48:18 479ms 3 NS 1 A 2 MX 🔓 Insecure
2026-10-04 08:06:58 583ms 3 NS 1 A 2 MX 🔓 Insecure
2026-10-01 08:02:19 812ms 3 NS 1 A 2 MX 🔓 Insecure
2026-08-28 00:15:08 9632ms 3 NS 1 A 2 MX 🔓 Insecure
2026-08-12 18:04:38 4107ms 3 NS 1 A 2 MX 🔓 Insecure
2026-07-10 07:09:55 shown 1550ms 3 NS 1 A 3 MX 🔓 Insecure
2026-07-08 17:05:14 904ms 3 NS 1 A 1 MX 🔓 Insecure
2026-07-06 12:34:13 669ms 3 NS 1 A 1 MX 🔓 Insecure
2026-06-23 21:11:34 1571ms 2 NS 1 A 1 MX 🔒 Secure
2026-06-23 13:11:32 1122ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-20 05:00:21 1067ms 2 NS 1 A 1 MX 🔒 Secure
2026-06-17 09:40:34 4674ms 2 NS 1 A 1 MX 🔒 Secure
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