core.su - dns.ninja
core.su
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2001:470:7240::🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ipv6.cns.su | ||||||
| A | 88.198.54.22🇩🇪 Hetzner88.198.0.0/16 HETZNER-RZ-NBG-BLK4 | ||||||
| NS | d.ns.cns.su ⭐ ⚠️ Not in parent delegation | ||||||
| A | 2001:470:7240::d🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | d.ns.cns.su | ||||||
| A | 88.198.54.27🇩🇪 Hetzner88.198.0.0/16 HETZNER-RZ-NBG-BLK4 | ||||||
| PTR | static.88-198-54-27.clients.your-server.de | ||||||
| NS | d.ns.core.su ⚠️ Not in parent delegation | ||||||
| A | 2001:470:7240::d🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | d.ns.cns.su | ||||||
| NS | fmt.ns.cns.su ⚠️ Not in zone NS records | ||||||
| NS | lon.ns.cns.su ⚠️ Not in zone NS records | ||||||
| A | 2001:470:7240::d🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | d.ns.cns.su | ||||||
| A | 88.198.54.27🇩🇪 Hetzner88.198.0.0/16 HETZNER-RZ-NBG-BLK4 | ||||||
| PTR | static.88-198-54-27.clients.your-server.de | ||||||
| MX | mx.cns.su ⭐ | ||||||
| A | 2001:470:7240::🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ipv6.cns.su | ||||||
| MX | a.mx.cns.su(10) | ||||||
| A | 88.198.54.22🇩🇪 Hetzner88.198.0.0/16 HETZNER-RZ-NBG-BLK4 | ||||||
| PTR | static.88-198-54-22.clients.your-server.de | ||||||
| MX | core.su(46) | ||||||
| A | 2001:470:7240::🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ipv6.cns.su | ||||||
| A | 88.198.54.22🇩🇪 Hetzner88.198.0.0/16 HETZNER-RZ-NBG-BLK4 | ||||||
| PTR | static.88-198-54-22.clients.your-server.de | ||||||
| MX | s.mx.cns.su(99) | ||||||
| A | 88.198.54.27🇩🇪 Hetzner88.198.0.0/16 HETZNER-RZ-NBG-BLK4 | ||||||
| PTR | static.88-198-54-27.clients.your-server.de | ||||||
| TXT | v=spf1 ip6:2001:470:7240::/48 ip4:88.198.54.22 ?ptr:mail.yandex.net -all | ||||||
| SOA | d.ns.cns.suroot@cns.su 2015-02-05 #0 | ||||||
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=650210070 | ||||||
MX for
core.su |
Same first word
Similar names
DNS History
13 records (10 active, 3 former)
●NSd.ns.cns.su2026-02-15 → 2026-08-03 · 3 obs
● 2026-02-15 22:02:58
● 2026-08-03 04:55:46
●NSd.ns.core.su2026-02-15 → 2026-08-03 · 3 obs
● 2026-02-15 22:02:58
● 2026-08-03 04:55:46
●NSfmt.ns.cns.su2026-02-15 → 2026-08-03 · 23 obs
● 2026-02-15 22:02:58
● 2026-03-25 07:18:36
○ 2026-03-26 20:31:34
○ 2026-03-28 05:03:04
● 2026-03-30 00:12:10
● 2026-04-25 15:01:14
○ 2026-04-25 22:30:42
● 2026-04-26 04:38:36
● 2026-04-26 08:51:48
○ 2026-04-30 16:51:48
● 2026-05-03 01:27:16
○ 2026-05-03 17:16:02
● 2026-05-06 04:48:06
● 2026-05-30 01:50:00
○ 2026-05-30 14:44:40
● 2026-06-03 08:02:00
● 2026-06-05 23:48:12
○ 2026-06-07 11:10:58
● 2026-06-11 15:33:44
○ 2026-06-16 03:37:42
● 2026-06-19 08:52:28
● 2026-08-03 04:55:46
●NSlon.ns.cns.su2026-02-15 → 2026-08-03 · 3 obs
● 2026-02-15 22:02:58
● 2026-08-03 04:55:46
○NSns1.reg.ru2015-08-03 → 2015-12-02 · 4 obs
● 2015-12-02 13:24:14
○ 2026-02-15 22:02:58
○ 2026-08-03 04:55:46
○NSns2.reg.ru2015-08-03 → 2015-12-02 · 4 obs
● 2015-12-02 13:24:14
○ 2026-02-15 22:02:58
○ 2026-08-03 04:55:46
●MXcore.su2026-02-15 → 2026-08-03 · 2 obs
● 2026-08-03 04:55:46
●A2001:470:7240::2026-02-15 → 2026-08-03 · 3 obs
● 2026-02-15 22:02:58
● 2026-08-03 04:55:46
○A31.31.204.592015-08-03 → 2015-12-02 · 4 obs
● 2015-12-02 13:24:14
○ 2026-02-15 22:02:58
○ 2026-08-03 04:55:46
●A88.198.54.222026-02-15 → 2026-08-03 · 3 obs
● 2026-02-15 22:02:58
● 2026-08-03 04:55:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| su | c.tld-servers.ru, a.dns.ripn.net, b.dns.ripn.net, f.dns.ripn.net... | 12 records |
| core.su | fmt.ns.cns.su, lon.ns.cns.su | - |
✅ Authoritative Response
Server:88.198.54.27
NS records: fmt.ns.cns.su, lon.ns.cns.su
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for core.su (unsigned zone)
⏱️ Timing
Total: 1335ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 88.198.54.22 |
| AAAA | 1 | 2001:470:7240:: |
| NS | 2 | d.ns.cns.su, d.ns.core.su |
| MX | 4 | mx.cns.su (pri: 6), a.mx.cns.su (pri: 10)... |
| TXT | 1 | v=spf1 ip6:2001:470:7240::/48 ip4:88.198 |
| SOA | 1 | d.ns.cns.su root.cns.su |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (f.dns.ripn.net, e.dns.ripn.net, d.dns.ripn.net...)
Analysis
Mail Server Role
core.su serves as a mail server for core.su.
mx.cns.su, a.mx.cns.su and s.mx.cns.su tend to be used as mail servers in tandem with core.su.
IP Addresses
core.su points to the IP addresses 88.198.54.22 and 2001:470:7240::
mx.fmt.su, mx.mxr.su, a.mx.llvm.su plus two other host names have IP numbers in common with core.su.
Name Servers
Four name servers handle the delegation for core.su: d.ns.cns.su, fmt.ns.cns.su, lon.ns.cns.su and d.ns.core.su.
There is at least partial name server overlap between core.su and other domains — pla.su, cns.su, mxr.su and two more among them.
These name servers regularly appear alongside ns5.linode.com, ns2.linode.com, ns4.linode.com and 7 other name servers in NS record sets.
Host names pointing to two IP addresses:
d.ns.cns.su resolves to two addresses: 88.198.54.27 and 2001:470:7240::d.
lon.ns.cns.su resolves to two addresses: 88.198.54.27 and 2001:470:7240::d.
Host names resolving to a single IP address:
The hostname d.ns.core.su resolves to 2001:470:7240::d.
Three host names point to 2001:470:7240::d: d.ns.cns.su, lon.ns.cns.su and d.ns.core.su.
d.ns.cns.su along with lon.ns.cns.su each resolve to 88.198.54.27 IP addresses.
Mail Servers
Four mail servers handle core.su: core.su, mx.cns.su, a.mx.cns.su and s.mx.cns.su.
At least some of the mail servers used by core.su are shared with other domains: constantine.su, haz.su, w-w.su and two others among them.
These mail servers are routinely found in combination with the mail servers bmi.su, c4m.ru and cm.su.
Host names pointing to two IP addresses:
core.su resolves to two addresses: 88.198.54.22 and 2001:470:7240::.
Host names resolving to a single IP address:
The hostname mx.cns.su resolves to 2001:470:7240::.
The hostname a.mx.cns.su resolves to 88.198.54.22.
The hostname s.mx.cns.su resolves to 88.198.54.27.
core.su along with mx.cns.su each resolve to 2001:470:7240:: IP addresses.
core.su along with a.mx.cns.su each resolve to 88.198.54.22 IP addresses.