sellback.dk

📜 Historical scan 2026-06-26 16:39:15 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sellback.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 4 November 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.103.179 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 3 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#

3 records 257ms

Nameserver	IP addresses	PTR	ASN / 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 231ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.103.179	3600s	linux158.unoeuro.com	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records#

5 records 264ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	2a00:1450:400c:c02::1a 2a00:1450:400c:c02::1a 74.125.206.26	wn-in-x1a.1e100.net wn-in-f26.1e100.net wk-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.213.27 2a00:1450:4013:c1e::1b	yugrqzs-in-f27.1e100.net yugrqzs-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	142.251.127.26 2a00:1450:4001:c21::1a	lcfrai-in-f26.1e100.net lcfrai-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt3.aspmx.l.google.com	142.250.147.26 2a00:1450:4025:c01::1a	rd-in-f26.1e100.net rd-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt4.aspmx.l.google.com	172.253.152.26 2a00:1450:4010:c22::1a	yulpptr-in-f26.1e100.net yulpptr-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	94.231.103.179
🔶 Autoconfig	94.231.103.179

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 444ms

TXT Record
v=spf1 include:_spf.google.com include:spf.simply.com -all

✉️ SPF#

Policy	Record (sellback.dk)
-all (hard fail)	v=spf1 include:_spf.google.com include:spf.simply.com -all

📨 DMARC#

Policy	Record (_dmarc.sellback.dk)
p=none (monitor only)	v=DMARC1; p=none; pct=100; rua=mailto:re+kxdnzuq9ae3@dmarc.postmarkapp.com; sp=none; aspf=r;

📬 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 2026-10-13 01:45:00

www	94.231.103.179 (AS48854) (address records, no CNAME)
www vs bare domain	Same network sellback.dk: 94.231.103.179 (AS48854) www.sellback.dk: 94.231.103.179 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: 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

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

349ms

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

🏷️ SOA#

259ms

Field	Value
Serial	2025121701
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-05 19:59:12

Field	Value
Registrar	Simply.com A/S
Registered	2025-11-04
Expires	2026-11-03 (16d)

📋 WHOIS#

⏱️ Lookup Timing#

257ms

231ms

264ms

AAAA

216ms

TXT

444ms

CAA

223ms

HTTPS

272ms

TLSA

283ms

SOA

259ms

MTA-STS

305ms

DNSSEC

349ms

SRV

294ms

Total

2870ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 01:45:00	1157ms	3 NS 1 A 5 MX	🔒 Secure
2026-10-03 19:45:49	2261ms	3 NS 1 A 5 MX	🔒 Secure
2026-09-30 19:30:27	722ms	3 NS 1 A 5 MX	🔒 Secure
2026-09-24 21:19:01	641ms	3 NS 1 A 5 MX	🔒 Secure
2026-09-20 05:13:07	699ms	3 NS 1 A 5 MX	🔒 Secure
2026-06-26 16:39:15 shown	2870ms	3 NS 1 A 5 MX	🔒 Secure
2026-06-18 05:38:20	911ms	3 NS 1 A 5 MX	🔒 Secure