citibank.dk is a .dk domain served by 2 nameservers (ns1.nsroot1.com, ns2.nsroot2.com). It was registered on 26 March 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.nsroot1.com | 156.154.64.172 | pdns172.ultradns.com | AS12008 Vercara, LLC |
| ns2.nsroot2.com | 193.108.91.190 | a1-190.akam.net | AS21342 Akamai International B.V. |
| TXT Record |
|---|
| v=spf1 a:mail.citigroup.com -all |
| Policy | Record (citibank.dk) |
|---|---|
| -all (hard fail) | v=spf1 a:mail.citigroup.com -all |
| Policy | Record (_dmarc.citibank.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc_rua@emaildefense.proofpoint.com,mailto:dmarc.reports.rua@citi.com |
| Flags | Tag | Value |
|---|---|---|
| 128 | iodef | mailto:CAADNS@citi.com |
| 128 | issue | digicert.com |
| 128 | issuewild | ; |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves citibank.dk: no address www.citibank.dk: no address |
| Wildcard | No |
DNS lookups: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2021100416 |
| Primary NS (MNAME) | ns1.nsroot1.com |
| Responsible (RNAME) | hostmaster@citi.com |
| Refresh | 3600s |
| Retry | 300s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | CSC Digital Brand Service, Inc |
| Registered | 1998-03-26 |
| Expires | 2027-03-31 (164d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-04 01:05:09 shown | 9806ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-08-27 18:59:59 | 2478ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-08-25 11:13:48 | 1251ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-07-17 20:03:44 | 584ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-12 22:22:27 | 9424ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-07-07 04:49:09 | 1069ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-28 12:15:01 | 633ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-25 11:46:18 | 462ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-24 15:29:05 | 915ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-23 03:28:43 | 910ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 21:13:02 | 618ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-16 20:56:09 | 479ms | 2 NS 0 A 0 MX | 🔓 Insecure |