polya.cn - robtex.com
polya.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 127.0.0.1 | ||||||
| NS | ns1.exp.4cun.com ⚠️ Not in zone NS records | ||||||
| A | 43.165.183.246🇸🇬 TENCENT-NET-AP-CN43.165.128.0/18 Proxy-registered route object | ||||||
| NS | ns2.exp.4cun.com ⚠️ Not in zone NS records | ||||||
| A | 43.165.183.246🇸🇬 TENCENT-NET-AP-CN43.165.128.0/18 Proxy-registered route object | ||||||
| MX | mail.happyisp.com ⭐ | ||||||
| A | 5.161.49.68🇺🇸 HETZNER-CLOUD2-AS5.161.49.0/24 | ||||||
| PTR | mail.happyisp.com | ||||||
| A | 137.184.158.105🇺🇸 DIGITALOCEAN137.184.144.0/20 DigitalOcean | ||||||
| PTR | mail.happyisp.com | ||||||
| TXT | v=spf1 ip6:fd0d:d741:e183::/48 -all | ||||||
cn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.dns.cn ⭐ | ||||||
| NS | b.dns.cn | ||||||
| NS | c.dns.cn | ||||||
| NS | d.dns.cn | ||||||
| NS | e.dns.cn | ||||||
| NS | ns.cernet.net ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2035065802 | ||||||
Same first word
Similar names
DNS History
7 records (4 active, 3 former)
○NSns1.alidns.com2015-08-04 → 2017-03-18 · 4 obs
● 2017-03-18 18:39:26
○ 2026-06-18 12:48:28
○ 2026-07-20 14:53:48
●NSns1.exp.4cun.com2026-06-18 → 2026-07-20 · 3 obs
● 2026-06-18 12:48:28
● 2026-07-20 14:53:48
○NSns2.alidns.com2015-08-04 → 2017-03-18 · 4 obs
● 2017-03-18 18:39:26
○ 2026-06-18 12:48:28
○ 2026-07-20 14:53:48
●NSns2.exp.4cun.com2026-06-18 → 2026-07-20 · 3 obs
● 2026-06-18 12:48:28
● 2026-07-20 14:53:48
●MXmail.happyisp.com2026-06-26 → 2026-07-20 · 2 obs
● 2026-07-20 14:53:48
○A124.16.31.1522015-08-04 → 2017-03-18 · 4 obs
● 2017-03-18 18:39:26
○ 2026-06-18 12:48:28
○ 2026-07-20 14:53:48
●A127.0.0.12026-06-26 → 2026-07-20 · 3 obs
● 2026-06-26 08:17:14
● 2026-07-20 14:53:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| polya.cn | ns1.exp.4cun.com, ns2.exp.4cun.com | - |
✅ Authoritative Response
Server:43.165.183.246
NS records: ns1.exp.4cun.com, ns2.exp.4cun.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for polya.cn (unsigned zone)
⏱️ Timing
Total: 3951ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 127.0.0.1 |
| MX | 1 | mail.happyisp.com (pri: 1) |
| TXT | 1 | v=spf1 ip6:fd0d:d741:e183::/48 -all |
Analysis
IP Addresses
polya.cn resolves to just one IP address, 127.0.0.1.
Two other host names, along with 0.0.0.8.0.0.0.f.b.8.0.0.b.8.0.1.0.0.2.ip6.arpa, 204.202.static.quadranet.com and occudx.net, also share IP numbers with polya.cn.
Name Servers
The NS records for polya.cn delegate to ns1.exp.4cun.com and ns2.exp.4cun.com.
polya.cn shares its NS records with other domains, for example 465488.cn, qowan8.cn, holca.cn and two others.
polya.cn and other domains like stepday.com share at least a portion of their name servers.
Each of ns1.exp.4cun.com and ns2.exp.4cun.com points to exactly one IP address: 43.165.183.246.
ns1.exp.4cun.com and ns2.exp.4cun.com each have 43.165.183.246 IP addresses.
Mail Servers
The sole mail server for polya.cn is mail.happyisp.com.
Among the domains sharing a mail server setup with polya.cn are rowe.cn, jzgczj.cn, enyue.cn and two others.
mail.happyisp.com directs to two IP numbers, 5.161.49.68 and 137.184.158.105.