bystudents.dk

📜 Historical scan 2026-09-30 06:23:58 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

bystudents.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 21 November 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.191.156.58 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 35ms

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 26ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
93.191.156.58	3600s	linux193.unoeuro.com	AS48854	team.blue Denmark A/S	93.191.152.0/21	🇩🇰 Denmark	—

📧 MX Records#

5 records 31ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	2a00:1450:4010:c1c::1b 64.233.161.27	la-in-f27.1e100.net lh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1b	lcdels-in-f27.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1a	mad01s14-in-f27.1e100.net yukulwh-in-f27.1e100.net yukulwh-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	3600s	alt3.aspmx.l.google.com	172.253.158.26 2404:6800:4003:c26::1a	so-in-f26.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt4.aspmx.l.google.com	108.177.125.26 2404:6800:4008:c01::1b	tp-in-f26.1e100.net tp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	93.191.156.58
🔶 Autoconfig	maildiscover.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 47ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	maildiscover.simply.com

📝 TXT Records#

2 records 135ms

TXT Record
google-site-verification=YimvY5a1X0PSei1tSfjiDLshm7m6PQlWgO-v3m0z3Fc
v=spf1 include:_spf.google.com include:spf.simply.com -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.bystudents.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 09:10:15

www	93.191.156.58 (AS48854) (address records, no CNAME)
www vs bare domain	Same network bystudents.dk: 93.191.156.58 (AS48854) www.bystudents.dk: 93.191.156.58 (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#

78ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2025042300
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 2026-10-03 07:06:33

Field	Value
Registrar	Simply.com A/S
Registered	2023-11-21
Expires	2026-11-20 (34d)

📋 WHOIS#

⏱️ Lookup Timing#

35ms

26ms

31ms

AAAA

33ms

TXT

135ms

CAA

23ms

HTTPS

31ms

TLSA

66ms

SOA

0ms

MTA-STS

38ms

DNSSEC

78ms

SRV

47ms

Total

471ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-03 22:58:20	497ms	3 NS 1 A 5 MX	🔒 Secure
2026-10-03 06:36:06	594ms	3 NS 1 A 5 MX	🔒 Secure
2026-09-30 06:23:58 shown	471ms	3 NS 1 A 5 MX	🔒 Secure
2026-09-26 08:38:06	722ms	3 NS 1 A 5 MX	🔒 Secure
2026-09-11 22:52:03	742ms	3 NS 1 A 5 MX	🔒 Secure
2026-09-03 01:37:10	728ms	3 NS 1 A 5 MX	🔒 Secure
2026-06-25 08:41:29	2332ms	3 NS 1 A 5 MX	🔒 Secure
2026-06-19 08:56:15	835ms	3 NS 1 A 5 MX	🔒 Secure
2026-06-16 18:25:10	2543ms	3 NS 1 A 5 MX	🔒 Secure