polymath.com.hk - dns.ninja
polymath.com.hk
com.hk
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns3.hkirc.net.hk ⭐ | ||||||
| NS | c.hkirc.net.hk ⚠️ Not in parent delegation | ||||||
| NS | d.hkirc.net.hk ⚠️ Not in parent delegation | ||||||
| NS | m.hkirc.net.hk ⚠️ Not in parent delegation | ||||||
| NS | t.hkirc.net.hk ⚠️ Not in parent delegation | ||||||
| NS | u.hkirc.net.hk ⚠️ Not in parent delegation | ||||||
| NS | v.hkirc.net.hk ⚠️ Not in parent delegation | ||||||
| NS | x.hkirc.net.hk ⚠️ Not in parent delegation | ||||||
| NS | y.hkirc.net.hk ⚠️ Not in parent delegation | ||||||
| NS | z.hkirc.net.hk ⚠️ Not in parent delegation | ||||||
| SOA | ns3.hkirc.net.hkhostmaster@hkirc.net.hk serial=2073559532 | ||||||
Same first word
Similar names
DNS History
9 records (9 active, 0 former)
●NSns10.hkdnr.net.hk2015-07-06 → 2026-06-17 · 2 obs
● 2026-06-17 11:25:36
●NSns11.hkdnr.net.hk2015-07-06 → 2026-06-17 · 2 obs
● 2026-06-17 11:25:36
●NSns12.hkdnr.net.hk2015-07-06 → 2026-06-17 · 2 obs
● 2026-06-17 11:25:36
●NSns9.hkdnr.net.hk2015-07-06 → 2026-06-17 · 2 obs
● 2026-06-17 11:25:36
●MXalt1.aspmx.l.google.com2015-07-06 → 2026-06-17 · 2 obs
● 2026-06-17 11:25:36
●MXalt2.aspmx.l.google.com2015-07-06 → 2026-06-17 · 2 obs
● 2026-06-17 11:25:36
●MXalt3.aspmx.l.google.com2015-07-06 → 2026-06-17 · 2 obs
● 2026-06-17 11:25:36
●MXalt4.aspmx.l.google.com2015-07-06 → 2026-06-17 · 2 obs
● 2026-06-17 11:25:36
●MXaspmx.l.google.com2015-07-06 → 2026-06-17 · 2 obs
● 2026-06-17 11:25:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| hk | c.hkirc.net.hk, d.hkirc.net.hk, m.hkirc.net.hk, t.hkirc.net.hk... | 18 records |
| polymath.com.hk | ns12.hkdnr.net.hk, ns11.hkdnr.net.hk, ns9.hkdnr.net.hk, ns10.hkdnr.net.hk | - |
✅ Authoritative Response
Server:203.119.2.174
NS records: ns12.hkdnr.net.hk, ns11.hkdnr.net.hk, ns9.hkdnr.net.hk, ns10.hkdnr.net.hk
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 3330ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | NS11.HKDNR.NET.HK, NS9.HKDNR.NET.HK... |
| MX | 5 | ASPMX.L.GOOGLE.COM (pri: 1), ALT2.ASPMX.L.GOOGLE.COM (pri: 5)... |
| TXT | 1 | google-site-verification=91V4w2-Wx21Rxq7 |
| SOA | 1 | NS9.HKDNR.NET.HK HOSTMASTER.HKDNR.NET.HK |
📌 Glue Records Collected
Total: 18
In-bailiwick: 18 (c.hkirc.net.hk, d.hkirc.net.hk, m.hkirc.net.hk...)
Analysis
Name Servers
The authoritative name servers for polymath.com.hk are ns10.hkdnr.net.hk, ns11.hkdnr.net.hk, ns12.hkdnr.net.hk and ns9.hkdnr.net.hk.
There is at least partial name server overlap between polymath.com.hk and other domains — andrewyao.hk, synergy-hk.com.hk, starocean.hk and two more among them.
All four hostnames — ns10.hkdnr.net.hk, ns11.hkdnr.net.hk, ns12.hkdnr.net.hk and ns9.hkdnr.net.hk — resolve to two IP numbers apiece: ns10.hkdnr.net.hk to 203.119.87.173 and 2001:dca:2000::cb77:57ad; ns11.hkdnr.net.hk to 203.119.2.174 and 2001:dca:4000::cb77:2ae; ns12.hkdnr.net.hk to 203.119.87.174 and 2001:dca:2000::cb77:57ae; ns9.hkdnr.net.hk to 203.119.2.173 and 2001:dca:4000::cb77:2ad.
Mail Servers
polymath.com.hk has five mail servers, which are aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.
polymath.com.hk has at least partial mail server overlap with other domains such as mymarin.com.tr, insuranceinspection.net, kileykreations.com and two more.
These mail servers commonly co-occur with mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 others.
Hostnames that resolve to two IP addresses:
aspmx.l.google.com resolves to 142.251.16.26 and 2607:f8b0:4004:c29::1b.
alt1.aspmx.l.google.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1b.
alt2.aspmx.l.google.com resolves to 172.253.116.27 and 2a00:1450:400b:c02::1a.
alt3.aspmx.l.google.com resolves to 192.178.223.26 and 2a00:1450:4009:c0f::1b.
alt4.aspmx.l.google.com resolves to 172.253.157.26 and 2a00:1450:400c:c23::1b.