| 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 | ns1-190.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 | ; |
| 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 |
| Scanned At | Duration | Records | DNSSEC | |
|---|---|---|---|---|
| 2026-08-27 18:59:59 | 2478ms | 2 NS 0 A 0 MX | 🔓 Insecure | View |
| 2026-08-25 11:13:48 | 1251ms | 2 NS 0 A 0 MX | 🔓 Insecure | View |
| 2026-07-17 20:03:44 | 584ms | 2 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-07-12 22:22:27 | 9424ms | 2 NS 0 A 0 MX | 🔓 Insecure | View |
| 2026-07-07 04:49:09 | 1069ms | 2 NS 0 A 0 MX | 🔓 Insecure | View |
| 2026-06-28 12:15:01 | 633ms | 2 NS 0 A 0 MX | 🔓 Insecure | View |
| 2026-06-25 11:46:18 | 462ms | 2 NS 0 A 0 MX | 🔓 Insecure | View |
| 2026-06-24 15:29:05 | 915ms | 2 NS 0 A 0 MX | 🔓 Insecure | View |
| 2026-06-23 03:28:43 | 910ms | 0 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-06-22 21:13:02 | 618ms | 2 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-06-16 20:56:09 | 479ms | 2 NS 0 A 0 MX | 🔓 Insecure | View |