authsmtp.netzero.com - dns.ninja
authsmtp.netzero.com
| CNAME | smtp-com.netzero.net | ||||||
| DNSSEC | ⚠️ Not signed | ||||||
| A | 64.136.44.50🇺🇸 UNSPECIFIED64.136.44.0/22 UOL DCA Block | ||||||
| PTR | smtp.dca.netzero.com | ||||||
| A | 64.136.52.50🇺🇸 UNSPECIFIED64.136.52.0/22 UOL VGS Block | ||||||
| MX | mx.dca.untd.com ⭐ | ||||||
| A | 64.136.44.37🇺🇸 UNSPECIFIED64.136.44.0/22 UOL DCA Block | ||||||
| PTR | mx.dca.untd.com | ||||||
| MX | mx.vgs.untd.com ⭐ | ||||||
| A | 64.136.52.37🇺🇸 UNSPECIFIED64.136.52.0/22 UOL VGS Block | ||||||
| PTR | mx.vgs.untd.com | ||||||
netzero.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 64.136.45.71🇺🇸 UNSPECIFIED64.136.44.0/22 UOL DCA Block | ||||||
| A | 64.136.53.71🇺🇸 UNSPECIFIED64.136.52.0/22 UOL VGS Block | ||||||
| NS | authns1.untd.com ⭐ | ||||||
| NS | authns2.untd.com | ||||||
| NS | authns3.untd.com | ||||||
| MX | mx.dca.untd.com ⭐ | ||||||
| MX | mx.vgs.untd.com ⭐ | ||||||
| TXT | spf2.0/pra ip4:64.136.0.0/20 ip4:64.136.16.0/21 ip4:64.136.22.0/24 ip4:64.136... | ||||||
| TXT | v=spf1 ip4:64.136.0.0/20 ip4:64.136.16.0/21 ip4:64.136.22.0/24 ip4:64.136.28.... | ||||||
| SOA | authns1.untd.comhostmaster@noc.untd.com 2025-12-24 #1 | ||||||
rank #470122 globally
rank #202153 in the tld
WOT: SAFE (60/100)
📈 Tranco rank: #154,400
Same first word
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authsmtp.biz |
Similar names
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smtpauth.org |
authsmpt.com |
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DNS History
5 records (1 active, 4 former)
○MXmx.dca.untd.com2015-10-29 → 2016-12-19 · 4 obs
● 2016-12-19 06:38:58
○ 2026-06-17 10:34:54
○ 2026-07-03 09:07:40
○MXmx.vgs.untd.com2015-10-29 → 2016-12-19 · 4 obs
● 2016-12-19 06:38:58
○ 2026-06-17 10:34:54
○ 2026-07-03 09:07:40
○A64.136.44.502015-08-10 → 2016-12-19 · 4 obs
● 2016-12-19 06:38:58
○ 2026-06-17 10:34:54
○ 2026-07-03 09:07:40
○A64.136.52.502015-08-10 → 2016-12-19 · 4 obs
● 2016-12-19 06:38:58
○ 2026-06-17 10:34:54
○ 2026-07-03 09:07:40
●CNAMEsmtp-com.netzero.net2015-08-10 → 2026-07-03 · 2 obs
● 2026-07-03 09:07:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | k.gtld-servers.net, j.gtld-servers.net, m.gtld-servers.net, l.gtld-servers.net... | - |
| netzero.com | authns2.untd.com, authns1.untd.com, authns3.untd.com | 3 records |
✅ Authoritative Response
Server:64.136.52.115
NS records: authns2.untd.com, authns1.untd.com, authns3.untd.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for netzero.com (unsigned zone)
⏱️ Timing
Total: 346ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| CNAME | 1 | smtp-com.netzero.net |
📌 Glue Records Collected
Total: 3
Out-of-bailiwick: 3 (authns2.untd.com, authns1.untd.com, authns3.untd.com)
Analysis
IP Addresses
authsmtp.netzero.com has two IP addresses: 64.136.44.50 and 64.136.52.50
Host names such as smtp-com.netzero.net, smtp.vgs.netzero.com and smtp.dca.netzero.com share their IP numbers with authsmtp.netzero.com.
Mail Servers
The MX records for authsmtp.netzero.com point to two mail servers: mx.dca.untd.com and mx.vgs.untd.com.
authsmtp.netzero.com has the same mail server arrangement as a number of other domains, for example freei.com, bluelightinternet.net, pop.juno.com and two more.
Both mx.dca.untd.com and mx.vgs.untd.com have a single IP address each — mx.dca.untd.com resolves to 64.136.44.37 while mx.vgs.untd.com resolves to 64.136.52.37.