bysb.dk

📜 Historical scan 2026-06-22 09:51:15  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

bysb.dk is a .dk domain served by 2 nameservers (dorthy.ns.cloudflare.com, micah.ns.cloudflare.com). It was registered on 22 December 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.83.17 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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   66ms
NameserverIP addressesPTRASN / ISP
dorthy.ns.cloudflare.com 108.162.192.249
172.64.32.249
173.245.58.249
2606:4700:50::adf5:3af9
2803:f800:50::6ca2:c0f9
2a06:98c1:50::ac40:20f9		 dorthy.ns.cloudflare.com
dorthy.ns.cloudflare.com
dorthy.ns.cloudflare.com
dorthy.ns.cloudflare.com
dorthy.ns.cloudflare.com
dorthy.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
micah.ns.cloudflare.com 108.162.193.206
172.64.33.206
173.245.59.206
2606:4700:58::adf5:3bce
2803:f800:50::6ca2:c1ce
2a06:98c1:50::ac40:21ce		 micah.ns.cloudflare.com
micah.ns.cloudflare.com
micah.ns.cloudflare.com
micah.ns.cloudflare.com
micah.ns.cloudflare.com
micah.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.

🌍 A Records#

2 records   38ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.83.17 600s — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.166.249 600s — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

5 records   67ms
PriorityTTLMail ServerIP addressesPTRASN
1 3600s aspmx.l.google.com 2a00:1450:4010:c03::1b
2a00:1450:4010:c03::1b
74.125.206.27		 lr-in-f27.1e100.net
lr-in-x1b.1e100.net
wk-in-f27.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
AS15169 Google LLC
5 3600s alt1.aspmx.l.google.com 172.253.158.27
2404:6800:4003:c26::1a		 so-in-f27.1e100.net
so-in-f26.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
5 3600s alt2.aspmx.l.google.com 172.253.158.26
2404:6800:4003:c26::1b		 so-in-f26.1e100.net
so-in-f27.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
10 3600s alt3.aspmx.l.google.com 108.177.125.26
2404:6800:4008:c01::1a		 tp-in-f26.1e100.net
tp-in-f26.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
10 3600s alt4.aspmx.l.google.com 173.194.43.27
2404:6800:400b:c01b::1b		 yudlsqd-in-f27.1e100.net
yunrtab-in-f27.1e100.net		 AS15169 Google LLC
AS15169 Google LLC

🔷 AAAA Records (IPv6)#

2 records   50ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3037::6815:5311 600s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3037::ac43:a6f9 600s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   86ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.83.17,172.67.166.249 ech=AEX+DQBBJAAgACDB8nG3c3vthT09zL/PHvAb5WdMJQT4KCgcXlMhg3liQAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3037::6815:5311,2606:4700:3037::ac43:a6f9

📝 TXT Records#

2 records   179ms
TXT Record
google-site-verification=v26MoK_TCEKQ9YX0GF5PtREi4lFW5Wp1k2PB88SSowg
v=spf1 include:_spf.google.com ~all

✉️ SPF#

PolicyRecord (bysb.dk)
~all (soft fail) v=spf1 include:_spf.google.com ~all

📨 DMARC#

PolicyRecord (_dmarc.bysb.dk)
p=reject v=DMARC1; p=reject; rua=mailto:dmarc@bysb.dk

📬 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 2026-10-14 17:16:47
www104.21.83.17 172.67.166.249 2606:4700:3037::6815:5311 2606:4700:3037::ac43:a6f9 (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardNo

✍️ DKIM keys#

1 found
SelectorCNAMEKey
google — 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: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

65ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

36ms
FieldValue
Serial2407222216
Primary NS (MNAME)dorthy.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-14 17:40:16
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2025-12-22
Expires2026-12-21 (60d)

🔗 Same registrant#

2 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

DomainRegistrar
101.dkPunktum dk A/S (direct)
ansible.dkPunktum dk A/S (direct)
📋 WHOIS#

⏱️ Lookup Timing#

NS
66ms
A
38ms
MX
67ms
AAAA
50ms
TXT
179ms
CAA
36ms
HTTPS
86ms
TLSA
65ms
SOA
36ms
MTA-STS
37ms
DNSSEC
65ms
SRV
109ms
Total
1077ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-14 17:16:47 888ms 2 NS 2 A 5 MX 🔓 Insecure
2026-09-25 05:06:38 9593ms 2 NS 2 A 5 MX 🔓 Insecure
2026-09-17 11:04:33 2609ms 2 NS 2 A 5 MX 🔓 Insecure
2026-09-10 10:12:01 3392ms 2 NS 2 A 5 MX 🔓 Insecure
2026-08-27 20:27:49 9944ms 2 NS 2 A 5 MX 🔓 Insecure
2026-08-16 21:37:30 3183ms 2 NS 2 A 5 MX 🔓 Insecure
2026-07-17 06:39:57 3384ms 2 NS 2 A 5 MX 🔓 Insecure
2026-06-22 09:51:15 shown 1077ms 2 NS 2 A 5 MX 🔓 Insecure
2026-06-20 00:47:24 5475ms 2 NS 2 A 5 MX 🔓 Insecure
2026-06-16 18:25:50 677ms 2 NS 2 A 5 MX 🔓 Insecure
dhd.dk [/] search Domains, Hosts & DNS — .dk zone