| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 144.160.155.43 | 3600s | att.com att.net |
AS797 | AT&T Services, Inc. | 144.160.0.0/15 | 🇺🇸 United States | — |
| 144.160.36.42 | 3600s | att.com att.net my.atttest.com |
AS797 | AT&T Services, Inc. | 144.160.0.0/15 | 🇺🇸 United States | Dallas |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | . Null MX — domain accepts no email (RFC 7505) | |||
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (att.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.att.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2011120601 |
| Primary NS (MNAME) | ns0.attdns.net |
| Responsible (RNAME) | eiss-dns@att.com |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 2592000s |
| Minimum (neg-cache TTL) | 86400s |