calcio.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 22 April 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 3.231.35.217 is hosted by Amazon.com, Inc. (AS14618) in United States. Mail is handled by mx.simply.com. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 3.231.35.217 | 3600s | ec2-3-231-35-217.compute-1.amazonaws.com | AS14618 | Amazon.com, Inc. | 3.224.0.0/12 | 🇺🇸 United States | Ashburn |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx.simply.com | 94.231.106.20 | mx.simply.com | AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔶 Autoconfig | maildiscover.simply.com → 94.231.108.222 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | maildiscover.simply.com |
| TXT Record |
|---|
| v=spf1 include:spf.simply.com -all |
| Policy | Record (calcio.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.simply.com -all |
| Policy | Record (_dmarc.calcio.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com; |
| www CNAME | target.substack-custom-domains.com (all on substack-custom-domains.com) |
| www vs bare domain | Different networks calcio.dk: 3.231.35.217 (AS14618) (all like this)www.calcio.dk: 104.18.36.24 172.64.151.232 2606:4700:4401::6812:2418 2606:4700:4406::ac40:97e8 (AS13335) |
| Wildcard | No |
| 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 |
DNS lookups: 1/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | A9D603AF4D7ED6B9246B4B68500CD6F2… |
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 97A3BA009F39C761BFFB6574340E8138… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026020101 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2016-04-22 |
| Expires | 2027-04-30 (191d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-03 07:00:15 | 576ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 06:51:04 | 690ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 19:31:49 | 531ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 04:43:33 | 640ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 04:59:17 | 1320ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 05:17:11 shown | 2013ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 18:55:43 | 601ms | 3 NS 1 A 1 MX | 🔒 Secure |