gerstrom.dk

📜 Historical scan 2026-06-21 22:12:13 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

gerstrom.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 31 May 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.106.189 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 5 more. The zone is DNSSEC-signed but currently fails validation, 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#

2 records 40ms

Nameserver	IP addresses	PTR	ASN / 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 41ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.106.189	600s	linux45.unoeuro.com	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records#

7 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	43200s	aspmx.l.google.com	142.251.127.26 2a00:1450:4010:c0e::1b 2a00:1450:4010:c0e::1b	lcfrai-in-f26.1e100.net lu-in-x1b.1e100.net lu-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
20	43200s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4000:1025::1a	lcdels-in-f27.1e100.net lcbomp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
20	43200s	alt2.aspmx.l.google.com	192.178.158.27 2404:6800:4003:c26::1a	lcdels-in-f27.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
30	43200s	aspmx2.googlemail.com	192.178.158.26 2404:6800:4013:813::1a	lcdels-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
30	43200s	aspmx3.googlemail.com	192.178.158.26 2404:6800:4013:813::1a	lcdels-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
30	43200s	aspmx4.googlemail.com	172.253.158.27 2404:6800:4013:813::1a	so-in-f27.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
30	43200s	aspmx5.googlemail.com	108.177.125.26 2404:6800:400b:c01b::1a	tp-in-f26.1e100.net yunrtab-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 254ms

TXT Record
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (gerstrom.dk)
~all (soft fail)	v=spf1 include:_spf.google.com ~all

📨 DMARC#

Policy	Record (_dmarc.gerstrom.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:nikolaj@gerstrom.dk; ruf=mailto:nikolaj@gerstrom.dk; fo=1

📬 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 09:45:14

www	94.231.106.189 (AS48854) (address records, no CNAME)
www vs bare domain	Same network gerstrom.dk: 94.231.106.189 (AS48854) www.gerstrom.dk: 94.231.106.189 (AS48854)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
google	—	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: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

70ms

Check	Result
Validation Status	⚠️ Bogus
AD Flag (resolver validates)	✗ Not set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	broken trust chain resolving 'gerstrom.dk/DNSKEY/IN': 127.0.0.1#53

🏷️ SOA#

54ms

Field	Value
Serial	2026060401
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-06 00:29:15

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1999-05-31
Expires	2027-06-30 (255d)

📋 WHOIS#

⏱️ Lookup Timing#

40ms

41ms

AAAA

94ms

TXT

254ms

CAA

38ms

HTTPS

42ms

TLSA

54ms

SOA

54ms

MTA-STS

41ms

DNSSEC

70ms

SRV

102ms

Total

697ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 09:45:14	1070ms	2 NS 1 A 7 MX	🔒 Secure
2026-10-06 00:07:13	3247ms	2 NS 1 A 7 MX	🔒 Secure
2026-09-29 23:22:59	549ms	2 NS 1 A 7 MX	🔒 Secure
2026-09-24 00:23:30	1269ms	2 NS 1 A 7 MX	🔒 Secure
2026-09-06 21:29:19	957ms	2 NS 1 A 7 MX	🔒 Secure
2026-08-14 07:56:17	17478ms	2 NS 1 A 7 MX	🔒 Secure
2026-08-06 05:03:06	2087ms	2 NS 1 A 7 MX	🔒 Secure
2026-07-05 20:50:14	10283ms	2 NS 1 A 7 MX	🔒 Secure
2026-07-04 12:47:36	6980ms	2 NS 1 A 7 MX	🔒 Secure
2026-06-21 22:12:13 shown	697ms	2 NS 1 A 7 MX	⚠️ Bogus
2026-06-17 09:39:53	2983ms	2 NS 1 A 7 MX	🔒 Secure