mathworld.net.cn - robtex.com
mathworld.net.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 80.209.241.176🇺🇸 HOSTKEYUSA-AS80.209.241.0/24 HOSTKEY USA Inc | ||||||
| NS | jack.dnspod.net ⭐ | ||||||
| A | 2402:4e00:1470:2::e🇨🇳 TENCENT-NET-AP2402:4e00:1400::/40 | ||||||
| A | 1.12.0.4🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM | ||||||
| A | 1.14.119.35🇨🇳 TENCENT-NET-AP1.14.64.0/18 | ||||||
| A | 111.13.13.35🇨🇳 CHINAMOBILE-CN111.13.0.0/16 CMI (Customer Route) | ||||||
| A | 117.89.178.173🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC | ||||||
| A | 220.196.136.35🇨🇳 UNICOM-SHFT-IDC220.196.136.0/24 | ||||||
| NS | ivan.dnspod.net | ||||||
| A | 2402:4e00:111:fff::c🇨🇳 TENCENT-NET-AP2402:4e00::/35 | ||||||
| A | 1.12.0.1🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM | ||||||
| A | 36.155.149.176🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route) | ||||||
| A | 101.227.168.35🇨🇳 SHANGHAITELECOM101.227.168.0/23 SHIDC | ||||||
| A | 111.206.98.235🇨🇳 CHINA169-BJ111.206.98.0/24 | ||||||
| A | 129.211.176.239🇨🇳 TENCENT-NET-AP129.211.176.0/20 | ||||||
| SOA | jack.dnspod.netfreednsadmin@dnspod.com serial=1775514658 | ||||||
net.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a.dns.cn ⭐ ⚠️ Not in parent delegation | ||||||
| NS | b.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | c.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | cns.cernet.net ⚠️ Not in parent delegation | ||||||
| NS | d.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | e.dns.cn ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2028164427 | ||||||
Same first word
Similar names
DNS History
3 records (3 active, 0 former)
●NSivan.dnspod.net2026-03-22 → 2026-05-11 · 2 obs
● 2026-05-11 19:19:54
●NSjack.dnspod.net2026-03-22 → 2026-05-11 · 2 obs
● 2026-05-11 19:19:54
●A80.209.241.1762026-03-22 → 2026-05-11 · 2 obs
● 2026-05-11 19:19:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | e.dns.cn, c.dns.cn, b.dns.cn, a.dns.cn... | - |
| mathworld.net.cn | ivan.dnspod.net, jack.dnspod.net | - |
✅ Authoritative Response
Server:111.206.98.235
NS records: ivan.dnspod.net, jack.dnspod.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mathworld.net.cn (unsigned zone)
⏱️ Timing
Total: 3637ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 80.209.241.176 |
| NS | 2 | jack.dnspod.net, ivan.dnspod.net |
| SOA | 1 | jack.dnspod.net freednsadmin.dnspod.com |
Analysis
IP Addresses
mathworld.net.cn resolves to a single IP address: 80.209.241.176.
Other host names including android-docs.cn, 100000.org.cn, moegirl.tw, igraph.cn and php.ac.cn share IP numbers with mathworld.net.cn.
Name Servers
mathworld.net.cn's delegation uses two name servers, ivan.dnspod.net and jack.dnspod.net.
mathworld.net.cn shares the same name server setup as other domains, for example ilrdc.tw, lineageos.cn, woodpecker.org.cn, bud.org.tw and pkucn.com.
mathworld.net.cn partially shares its name servers with other domains, for example plausible.com.cn and xzxkjd.com.
Host names with six IP numbers:
ivan.dnspod.net points to: 2402:4e00:111:fff::c, 1.12.0.1, 36.155.149.176, 101.227.168.35, 111.206.98.235 and 129.211.176.239.
jack.dnspod.net points to: 2402:4e00:1470:2::e, 1.12.0.4, 1.14.119.35, 111.13.13.35, 117.89.178.173 and 220.196.136.35.