gsl.dk

📜 Historical scan 2026-06-17 09:31:50 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

gsl.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 86.52.56.6 is hosted by Sinal A/S (AS39642) in Denmark. Mail is handled by gsl-dk.mail.protection.outlook.com. 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#

2 records 134ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	—	—	—
ns02.one.com	—	—	—

🌍 A Records#

1 records 112ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
86.52.56.6	—	86-52-56-6.norlyscustomer.net	AS39642	Sinal A/S	86.52.0.0/16	🇩🇰 Denmark	Silkeborg

📧 MX Records#

1 records 121ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	gsl-dk.mail.protection.outlook.com	52.101.73.19 52.101.73.28 52.101.73.30 52.101.73.6	mail-as8pr04cu00803.inbound.protection.outlook.com mail-am7pr05cu00204.inbound.protection.outlook.com mail-am7pr05cu00306.inbound.protection.outlook.com mail-am6pr04cu00306.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 241ms

TXT Record
MS=ms38522336
v=spf1 redirect=lynge.org

✉️ SPF#

Policy	Record (gsl.dk)
redirect=lynge.org	v=spf1 redirect=lynge.org

📨 DMARC#

Policy	Record (_dmarc.gsl.dk)
p=none (monitor only)	v=DMARC1; p=none; ruf=mailto:dmarc@lynge.org; 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 2026-10-15 20:43:40

www CNAME	bsd.lynge.org (all on lynge.org) → 86.52.55.241 (AS39642)
www vs bare domain	Same network gsl.dk: 86.52.55.241 (AS39642) www.gsl.dk: 86.52.55.241 (AS39642)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-gsl-dk._domainkey.lyngeorg0.q-v1.dkim.mail.microsoft	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: 7/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

246ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

112ms

Field	Value
Serial	2026052801
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

134ms

112ms

121ms

AAAA

135ms

TXT

241ms

CAA

111ms

HTTPS

115ms

TLSA

889ms

SOA

112ms

MTA-STS

88ms

DNSSEC

246ms

SRV

0ms

Total

1489ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 00:02:48	1202ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-21 13:08:44	1990ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-14 09:22:14	6915ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-29 23:32:00	1452ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-05 14:04:50	1646ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-02 00:16:28	1401ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-29 10:27:12	5520ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 22:24:41	1278ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 00:27:05	1107ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 05:34:06	1192ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 09:31:50 shown	1489ms	2 NS 1 A 1 MX	🔒 Secure