firstbooking.dk

📜 Historical scan 2026-09-23 23:15:06 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

firstbooking.dk is a .dk domain served by 3 nameservers (ns1.e-studio.dk, ns2.e-studio.dk, ns3.e-studio.dk). It was registered on 20 May 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.200.90.180 is hosted by Christian Ebsen ApS (AS62121) in Denmark. Mail is handled by mail.firstbooking.dk. 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 124ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.e-studio.dk	195.242.131.5 2001:67c:564:fffc::11	ns1.e-studio.dk ns1.e-studio.dk	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS
ns2.e-studio.dk	2a00:1b18:2:3::2 62.69.152.34	ns2.e-studio.dk ns2.e-studio.dk	AS47527 DLX A/S AS47527 DLX A/S
ns3.e-studio.dk	193.200.90.183 2001:67c:564:fffc::13	ns3.e-studio.dk ns3.e-studio.dk	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS

🌍 A Records#

1 records 91ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.200.90.180	300s	web8.e-studio.dk	AS62121	Christian Ebsen ApS	193.200.90.0/23	🇩🇰 Denmark	—

📧 MX Records#

1 records 112ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.firstbooking.dk	213.5.39.210	213-5-39-210.static.ip.bodata.dk	AS49974 Bo data ApS

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 192ms

TXT Record
v=spf1 +a +mx +ip4:193.200.90.180 include:_spf.e-studio.dk ~all

✉️ SPF#

Policy	Record (firstbooking.dk)
~all (soft fail)	v=spf1 +a +mx +ip4:193.200.90.180 include:_spf.e-studio.dk ~all

📨 DMARC#

Policy	Record (_dmarc.firstbooking.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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 2026-10-16 16:13:27

www CNAME	firstbooking.dk (all on firstbooking.dk) → 193.200.90.180 (AS62121)
www vs bare domain	Same network firstbooking.dk: 193.200.90.180 (AS62121) www.firstbooking.dk: 193.200.90.180 (AS62121)
Wildcard	No
Denial of existence	NSEC3 · 7 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	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: 3/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.firstbooking.dk	WRyJ5YYUa1pjcAOjbypie-U8iuQTtHeN0VxHL6ne2uE

🔗 TLSA / DANE#

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

🔐 DNSSEC#

193ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✓ Found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2026092306
Primary NS (MNAME)	ns1.e-studio.dk
Responsible (RNAME)	hostmaster@mailrelay.e-studio.dk
Refresh	3600s
Retry	1800s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-15 14:50:03

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2012-05-20
Expires	2027-05-31 (226d)

📋 WHOIS#

⏱️ Lookup Timing#

124ms

91ms

112ms

AAAA

122ms

TXT

192ms

CAA

91ms

HTTPS

79ms

TLSA

60ms

SOA

0ms

MTA-STS

133ms

DNSSEC

193ms

SRV

107ms

Total

1914ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 16:13:27	2422ms	3 NS 1 A 1 MX	🔓 Insecure
2026-10-15 14:31:15	1165ms	3 NS 1 A 1 MX	🔓 Insecure
2026-10-14 14:21:38	439ms	3 NS 1 A 1 MX	🔓 Insecure
2026-10-13 12:11:54	1743ms	3 NS 1 A 1 MX	🔓 Insecure
2026-10-12 09:13:13	357ms	3 NS 1 A 1 MX	🔓 Insecure
2026-10-11 05:15:44	580ms	3 NS 1 A 1 MX	🔓 Insecure
2026-10-10 04:05:12	2030ms	3 NS 1 A 1 MX	🔓 Insecure
2026-10-09 02:46:01	1984ms	3 NS 1 A 1 MX	🔓 Insecure
2026-10-08 02:43:24	674ms	3 NS 1 A 1 MX	🔓 Insecure
2026-10-07 02:35:16	552ms	3 NS 1 A 1 MX	🔓 Insecure
2026-10-06 00:23:50	432ms	3 NS 1 A 1 MX	🔓 Insecure
2026-10-05 00:21:46	16530ms	3 NS 1 A 1 MX	🔓 Insecure
2026-10-04 00:15:49	372ms	3 NS 1 A 1 MX	🔓 Insecure
2026-10-03 00:14:38	1732ms	3 NS 1 A 1 MX	🔓 Insecure
2026-10-01 23:59:43	474ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-30 23:43:43	688ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-30 00:31:24	1434ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-29 00:22:38	541ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-28 00:04:55	1682ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-25 23:25:20	763ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-24 23:01:12	489ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-23 23:15:06 shown	1914ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-22 14:53:52	16460ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-15 19:26:48	2263ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-14 11:45:10	901ms	3 NS 1 A 1 MX	🔓 Insecure