postmail4u.com - robtex.com
postmail4u.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 70.34.33.112🇺🇸 AS1198970.34.32.0/21 | ||||||
| PTR | static-ip-70-34-33-112.net-70-34-33-0.rdns.managed.com | ||||||
| NS | ns1.postmail4u.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 70.34.33.112🇺🇸 AS1198970.34.32.0/21 | ||||||
| PTR | static-ip-70-34-33-112.net-70-34-33-0.rdns.managed.com | ||||||
| NS | ns2.postmail4u.com ⚠️ Not in parent delegation | ||||||
| A | 70.34.33.112🇺🇸 AS1198970.34.32.0/21 | ||||||
| PTR | static-ip-70-34-33-112.net-70-34-33-0.rdns.managed.com | ||||||
| NS | nsa.rscentral.org ⚠️ Not in zone NS records | ||||||
| A | 70.34.33.117🇺🇸 AS1198970.34.32.0/21 | ||||||
| PTR | rscentral.org | ||||||
| NS | nsb.rscentral.org ⚠️ Not in zone NS records | ||||||
| A | 70.34.33.117🇺🇸 AS1198970.34.32.0/21 | ||||||
| PTR | rscentral.org | ||||||
| MX | mail.postmail4u.com ⭐ | ||||||
| A | 70.34.33.112🇺🇸 AS1198970.34.32.0/21 | ||||||
| PTR | static-ip-70-34-33-112.net-70-34-33-0.rdns.managed.com | ||||||
| TXT | v=spf1 +a +mx +a:B00077VEW1A000A.managed.com -all | ||||||
| SOA | ns1.postmail4u.comrut@rscentral.org 2022-10-24 #1 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1774573297 | ||||||
Subdomains
Same first word
postmail4u.com |
DNS History
13 records (6 active, 7 former)
○NSns0.phase8.net2015-08-08 → 2015-12-19 · 4 obs
● 2015-12-19 21:05:48
○ 2016-03-23 21:19:34
○ 2026-03-27 01:16:10
○NSns1.phase8.net2015-08-08 → 2015-12-19 · 4 obs
● 2015-12-19 21:05:48
○ 2016-03-23 21:19:34
○ 2026-03-27 01:16:10
●NSns1.postmail4u.com2026-03-01 → 2026-03-27 · 3 obs
● 2026-03-01 22:48:00
● 2026-03-27 01:16:10
○NSns2.phase8.net2015-08-08 → 2015-12-19 · 4 obs
● 2015-12-19 21:05:48
○ 2016-03-23 21:19:34
○ 2026-03-27 01:16:10
●NSns2.postmail4u.com2026-03-01 → 2026-03-27 · 3 obs
● 2026-03-01 22:48:00
● 2026-03-27 01:16:10
●NSnsa.rscentral.org2026-03-01 → 2026-03-27 · 3 obs
● 2026-03-01 22:48:00
● 2026-03-27 01:16:10
●NSnsb.rscentral.org2026-03-01 → 2026-03-27 · 3 obs
● 2026-03-01 22:48:00
● 2026-03-27 01:16:10
○MXfwd0.hosts.co.uk2015-08-08 → 2015-12-19 · 4 obs
● 2015-12-19 21:05:48
○ 2016-03-23 21:19:34
○ 2026-03-27 01:16:10
○MXfwd1.hosts.co.uk2015-08-08 → 2015-12-19 · 4 obs
● 2015-12-19 21:05:48
○ 2016-03-23 21:19:34
○ 2026-03-27 01:16:10
○MXfwd2.hosts.co.uk2015-08-08 → 2015-12-19 · 4 obs
● 2015-12-19 21:05:48
○ 2016-03-23 21:19:34
○ 2026-03-27 01:16:10
●MXmail.postmail4u.com2026-03-01 → 2026-03-27 · 3 obs
● 2026-03-01 22:48:00
● 2026-03-27 01:16:10
●A70.34.33.1122026-03-01 → 2026-03-27 · 3 obs
● 2026-03-01 22:48:00
● 2026-03-27 01:16:10
○A85.233.160.222015-08-08 → 2015-12-19 · 4 obs
● 2015-12-19 21:05:48
○ 2016-03-23 21:19:34
○ 2026-03-27 01:16:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | b.gtld-servers.net, l.gtld-servers.net, g.gtld-servers.net, a.gtld-servers.net... | - |
| postmail4u.com | nsa.rscentral.org, nsb.rscentral.org | - |
✅ Authoritative Response
Server:70.34.33.117
NS records: nsa.rscentral.org, nsb.rscentral.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for postmail4u.com (unsigned zone)
⏱️ Timing
Total: 565ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 70.34.33.112 |
| NS | 2 | ns1.postmail4u.com, ns2.postmail4u.com |
| MX | 1 | mail.postmail4u.com (pri: 10) |
| TXT | 1 | v=spf1 +a +mx +a:B00077VEW1A000A.managed |
| SOA | 1 | ns1.postmail4u.com rut.rscentral.org |
Analysis
Hierarchy
postmail4u.com is a parent of ns1.postmail4u.com, mail.postmail4u.com and ns2.postmail4u.com.
IP Addresses
postmail4u.com points to a single IP: 70.34.33.112.
Other host names, for instance bizmartmailandprint.com, ns1.in-n-outshipping.com, ns2.palmdalepostal.com, ns1.mailexchangeandmore.com and mymailboxstore.com share IP numbers with postmail4u.com.
Name Servers
postmail4u.com's delegation is handled by four name servers: ns1.postmail4u.com, ns2.postmail4u.com, nsa.rscentral.org and nsb.rscentral.org.
postmail4u.com partially shares name servers with other domains; examples include mailingstation.com, mailpacnfax.com, caldwellshipit.com, expresscps.com and postaloutletplus.com.
These name servers are commonly used alongside ns1.mailingstation.com, ns2.mailingstation.com, ns1.mailpacnfax.com, ns2.mailpacnfax.com, ns1.caldwellshipit.com, ns2.caldwellshipit.com, ns1.expresscps.com, ns2.expresscps.com, ns1.postaloutletplus.com and ns2.postaloutletplus.com.
Host names sharing a single IP address:
ns1.postmail4u.com points to: 70.34.33.112.
ns2.postmail4u.com points to: 70.34.33.112.
nsa.rscentral.org points to: 70.34.33.117.
nsb.rscentral.org points to: 70.34.33.117.
Host names pointing to 70.34.33.112: ns1.postmail4u.com and ns2.postmail4u.com.
Host names pointing to 70.34.33.117: nsa.rscentral.org and nsb.rscentral.org.
Mail Servers
postmail4u.com is handled by a single mail server, mail.postmail4u.com.
mail.postmail4u.com points to a single IP: 70.34.33.112.