postmail.su - dns.ninja
postmail.su
| DNSSEC | ⚠️ Not signed | ||||||
| A | 88.84.221.88🇷🇺 FLEX-AS88.84.192.0/19 Flex ISP | ||||||
| PTR | host4.symbios.ru | ||||||
| NS | host4.symbios ⭐ | ||||||
| NS | host4.symbios.ru | ||||||
| A | 88.84.221.88🇷🇺 FLEX-AS88.84.192.0/19 Flex ISP | ||||||
| PTR | host4.symbios.ru | ||||||
| NS | ns.symbios.ru | ||||||
| A | 88.84.221.88🇷🇺 FLEX-AS88.84.192.0/19 Flex ISP | ||||||
| PTR | host4.symbios.ru | ||||||
| NS | ns2.symbios.ru | ||||||
| MX | mail.postmail.su ⭐ | ||||||
| A | 88.84.221.88🇷🇺 FLEX-AS88.84.192.0/19 Flex ISP | ||||||
| PTR | host4.symbios.ru | ||||||
| TXT | v=spf1 ip4:192.168.18.185 ip4:88.84.221.88 a mx ~all | ||||||
| SOA | host4.symbiosroot@example.com 2025-05-09 #31 | ||||||
su
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.dns.ripn.net ⭐ | ||||||
| NS | b.dns.ripn.net | ||||||
| NS | c.tld-servers.ru | ||||||
| NS | d.dns.ripn.net | ||||||
| NS | e.dns.ripn.net | ||||||
| NS | f.dns.ripn.net | ||||||
| SOA | a.dns.ripn.nethostmaster@ripn.net serial=650209999 | ||||||
Subdomains
mail.postmail.su |
Same first word
Similar names
DNS History
6 records (6 active, 0 former)
●NShost4.symbios.ru2026-04-27 → 2026-07-28 · 2 obs
● 2026-07-28 09:06:16
●NSns.symbios.ru2026-04-27 → 2026-07-28 · 2 obs
● 2026-07-28 09:06:16
●NSns2.symbios.ru2026-04-27 → 2026-07-28 · 2 obs
● 2026-07-28 09:06:16
●MXmail.postmail.su2026-04-27 → 2026-07-28 · 2 obs
● 2026-07-28 09:06:16
●A88.84.221.882026-04-27 → 2026-07-28 · 2 obs
● 2026-07-28 09:06:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| su | b.dns.ripn.net, e.dns.ripn.net, c.tld-servers.ru, a.dns.ripn.net... | 12 records |
| postmail.su | host4.symbios.ru, ns2.symbios.ru, ns.symbios.ru | - |
✅ Authoritative Response
Server:88.84.221.88
NS records: host4.symbios.ru, ns2.symbios.ru, ns.symbios.ru
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for postmail.su (unsigned zone)
⏱️ Timing
Total: 2958ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 88.84.221.88 |
| NS | 3 | ns.symbios.ru, host4.symbios.ru... |
| MX | 2 | mail.postmail.su (pri: 10), mail.postmail.su (pri: 20) |
| TXT | 1 | v=spf1 ip4:192.168.18.185 ip4:88.84.221. |
| SOA | 1 | host4.symbios root.example.com |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (b.dns.ripn.net, b.dns.ripn.net, e.dns.ripn.net...)
Analysis
Hierarchy
postmail.su is the parent zone for mail.postmail.su.
IP Addresses
postmail.su directs to one IP number, which is 88.84.221.88.
Among the host names that share IP numbers with postmail.su are mail.postmail.su, mail.sparktell.net, symbios.ru and two others.
Name Servers
The domain postmail.su is delegated to these four name servers: host4.symbios, host4.symbios.ru, ns2.symbios.ru and ns.symbios.ru.
postmail.su partially shares its NS delegation with several other domains, including loasu.com, videonline.ru, dts.ru and two others.
These name servers regularly co-occur with the name servers ns2.example.com, ns1.example.com and ns1.loa.su.
host4.symbios.ru and ns.symbios.ru share one IP address between them — 88.84.221.88.
These two host names — host4.symbios.ru and ns.symbios.ru — each point to 88.84.221.88 IP addresses.
Mail Servers
postmail.su routes its mail through a single mail server, mail.postmail.su.
There is one IP number for mail.postmail.su: 88.84.221.88.