firstbooking.dk

📜 Historical scan 2026-09-14 11:45:10  ·  ← 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   39ms
NameserverIP addressesPTRASN / 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   39ms
IPTTLPTRASNISP / OrgCIDRCountryCity
193.200.90.180 300s web8.e-studio.dk AS62121 Christian Ebsen ApS 193.200.90.0/23 🇩🇰 Denmark —

📧 MX Records#

1 records   31ms
PriorityTTLMail ServerIP addressesPTRASN
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   131ms
TXT Record
v=spf1 +a +mx +ip4:193.200.90.180 include:_spf.e-studio.dk ~all

✉️ SPF#

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

📨 DMARC#

PolicyRecord (_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 CNAMEfirstbooking.dk (all on firstbooking.dk)
www vs bare domainSame network
firstbooking.dk: 193.200.90.180 (AS62121)
www.firstbooking.dk: 193.200.90.180 (AS62121)
WildcardNo
Denial of existenceNSEC3 · 7 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found
SelectorCNAMEKey
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#

TypeNameValue
TXT _acme-challenge.firstbooking.dk WRyJ5YYUa1pjcAOjbypie-U8iuQTtHeN0VxHL6ne2uE

🔗 TLSA / DANE#

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

🔐 DNSSEC#

126ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✓ Found
Flagsunsigned answer

🏷️ SOA#

0ms
FieldValue
Serial2026091402
Primary NS (MNAME)ns1.e-studio.dk
Responsible (RNAME)hostmaster@mailrelay.e-studio.dk
Refresh3600s
Retry1800s
Expire1209600s
Minimum (neg-cache TTL)86400s

📋 Registration#

WHOIS fetched 2026-10-15 14:50:03
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2012-05-20
Expires2027-05-31 (226d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
39ms
A
39ms
MX
31ms
AAAA
39ms
TXT
131ms
CAA
27ms
HTTPS
40ms
TLSA
295ms
SOA
0ms
MTA-STS
55ms
DNSSEC
126ms
SRV
52ms
Total
901ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
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 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 shown 901ms 3 NS 1 A 1 MX 🔓 Insecure
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