21-5.dk

📜 Historical scan 2026-06-16 12:45:39  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

21-5.dk is a .dk domain served by 2 nameservers (rex.ns.cloudflare.com, wanda.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.26.6.14 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by 215-dk0e.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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   44ms
NameserverIP addressesPTRASN / ISP
rex.ns.cloudflare.com — — —
wanda.ns.cloudflare.com — — —

🌍 A Records#

3 records   90ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.26.6.14 — — AS13335 Cloudflare, Inc. 104.26.0.0/20 — —
104.26.7.14 — — AS13335 Cloudflare, Inc. 104.26.0.0/20 — —
172.67.68.152 — — AS13335 Cloudflare, Inc. 172.67.64.0/18 — —

📧 MX Records#

1 records   55ms
PriorityTTLMail ServerIP addressesPTRASN
0 — 215-dk0e.mail.protection.outlook.com 52.101.68.10
52.101.68.32
52.101.68.36
52.101.73.24		 mail-dbbpr03cu00102.inbound.protection.outlook.com
mail-db3pr0202cu00200.inbound.protection.outlook.com
mail-db5pr02cu00104.inbound.protection.outlook.com
mail-as8pr05cu00300.inbound.protection.outlook.com		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
AS8075 Microsoft Corporation

🔷 AAAA Records (IPv6)#

3 records   55ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:20::681a:60e — — AS13335 Cloudflare, Inc. 2606:4700:20:0:0:0:0:0/44 — —
2606:4700:20::681a:70e — — AS13335 Cloudflare, Inc. 2606:4700:20:0:0:0:0:0/44 — —
2606:4700:20::ac43:4498 — — AS13335 Cloudflare, Inc. 2606:4700:20:0:0:0:0:0/44 — —

🔐 HTTPS Records#

1 records   61ms
PriorityTargetSvcParams
1 service . alpn="h2" ipv4hint=104.26.6.14,104.26.7.14,172.67.68.152 ipv6hint=2606:4700:20::681a:60e,2606:4700:20::681a:70e,2606:4700:20::ac43:4498

📝 TXT Records#

9 records   159ms
TXT Record
anthropic-domain-verification-pajkp2=TJzlf9fhojWDGpv7C0AiXoA3M
apple-domain-verification=kPSycGhYWcxYzSbb
atlassian-domain-verification=4oaasotvP7WJzXXBebi53TjrQaQx3sX1tIt8bb3Nc6Ho6aA7XROOH0A7b5uAQdKS
facebook-domain-verification=6vvmfxmue8t2y82bsu9pap3avboc5p
google-site-verification=7yxXcZsPCyFPqE5p6GztrT47fqjwiwebiUGfqt5yO4w
google-site-verification=ujsOMP2PBnfznNloQl_V9eMajFTj8XKPFbregK2-_yM
openai-domain-verification=dv-QQoQocn9jmNMm3oHvLm4Vra8
pinterest-site-verification=c539d6cf2875faf61466b724931c31e8
v=spf1 include:spf.protection.outlook.com include:_spf.easycruit.com include:spf.rpost.net include:mail.zendesk.com -all

✉️ SPF#

PolicyRecord (21-5.dk)
-all (hard fail) v=spf1 include:spf.protection.outlook.com include:_spf.easycruit.com include:spf.rpost.net include:mail.zendesk.com -all

📨 DMARC#

PolicyRecord (_dmarc.21-5.dk)
p=reject v=DMARC1; p=reject; aspf=s; rua=mailto:c1ac8455367f4b6fa8cd8795a652d51c@dmarc-reports.cloudflare.net,mailto:dmarc_agg@vali.email;

📬 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 23:48:08
www104.26.6.14 104.26.7.14 172.67.68.152 2606:4700:20::681a:60e 2606:4700:20::681a:70e 2606:4700:20::ac43:4498 (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardNo
Denial of existenceCompact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEYPublished: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

2 found
SelectorCNAMEKey
selector1 selector1-215-dk0e._domainkey.215crm.onmicrosoft.com RSA · ~1024 bit below 2048 bit
selector2 selector2-215-dk0e._domainkey.215crm.onmicrosoft.com 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: 4/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

169ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

52ms
FieldValue
Serial2407065825
Primary NS (MNAME)rex.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup
📋 WHOIS#

⏱️ Lookup Timing#

NS
44ms
A
90ms
MX
55ms
AAAA
55ms
TXT
159ms
CAA
82ms
HTTPS
61ms
TLSA
572ms
SOA
52ms
MTA-STS
44ms
DNSSEC
169ms
SRV
0ms
Total
1349ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-09-30 07:36:58 1581ms 2 NS 3 A 1 MX 🔒 Secure
2026-09-29 07:32:11 1518ms 2 NS 3 A 1 MX 🔒 Secure
2026-09-25 06:04:49 2150ms 2 NS 3 A 1 MX 🔒 Secure
2026-09-24 05:42:35 1658ms 2 NS 3 A 1 MX 🔒 Secure
2026-09-20 19:07:57 1919ms 2 NS 3 A 1 MX 🔒 Secure
2026-09-13 17:57:26 3966ms 2 NS 3 A 1 MX 🔒 Secure
2026-09-07 10:03:07 10433ms 2 NS 3 A 1 MX 🔒 Secure
2026-08-28 03:53:34 1477ms 2 NS 3 A 1 MX 🔒 Secure
2026-08-25 12:57:36 1694ms 2 NS 3 A 1 MX 🔒 Secure
2026-08-11 13:42:04 3311ms 2 NS 3 A 1 MX 🔒 Secure
2026-08-07 19:31:58 1700ms 2 NS 3 A 1 MX 🔒 Secure
2026-08-01 06:10:40 1514ms 2 NS 3 A 1 MX 🔒 Secure
2026-07-24 00:41:55 2446ms 2 NS 3 A 1 MX 🔒 Secure
2026-07-19 12:24:13 9536ms 2 NS 3 A 1 MX 🔒 Secure
2026-07-18 11:07:22 2749ms 2 NS 3 A 1 MX 🔒 Secure
2026-06-26 13:50:55 1652ms 2 NS 3 A 1 MX 🔒 Secure
2026-06-24 22:31:54 2015ms 2 NS 3 A 1 MX 🔒 Secure
2026-06-22 10:33:41 1114ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-21 19:07:27 2692ms 2 NS 3 A 1 MX 🔒 Secure
2026-06-21 10:44:42 1152ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-19 19:01:44 914ms 2 NS 3 A 1 MX 🔒 Secure
2026-06-18 09:18:14 1860ms 2 NS 3 A 1 MX 🔒 Secure
2026-06-16 12:45:39 shown 1349ms 2 NS 3 A 1 MX 🔒 Secure
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