mathcert.com - robtex.com
mathcert.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 89.31.143.90🇩🇪 UDAG89.31.143.0/24 | ||||||
| NS | ns.udag.de ⭐ | ||||||
| A | 2001:8d8:fe:53:217:160:80:253🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific | ||||||
| PTR | ns.udag.de | ||||||
| A | 217.160.80.253🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific | ||||||
| PTR | ns.udag.de | ||||||
| NS | ns.udag.net | ||||||
| A | 2607:f1c0:fe:53:185:132:33:253🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US | ||||||
| PTR | ns.udag.net | ||||||
| A | 185.132.33.253🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS) | ||||||
| PTR | ns.udag.net | ||||||
| NS | ns.udag.org | ||||||
| A | 2607:f1c0:fe:53:185:132:34:253🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US | ||||||
| PTR | ns.udag.org | ||||||
| A | 185.132.34.253🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS) | ||||||
| PTR | ns.udag.org | ||||||
| MX | mx00.udag.de ⭐ | ||||||
| A | 62.146.106.39🇩🇪 IPX-AS1559862.146.104.0/22 NorthC Deutschland GmbH | ||||||
| PTR | mx00.udag.de | ||||||
| MX | mx01.udag.de(20) | ||||||
| A | 62.146.106.40🇩🇪 IPX-AS1559862.146.104.0/22 NorthC Deutschland GmbH | ||||||
| PTR | mx01.udag.de | ||||||
| TXT | v=spf1 include:_smtp.udag.de ~all | ||||||
| SOA | ns.udag.dehostmaster@united-domains.de 2024-03-16 #3 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1786457794 | ||||||
Subdomains
mail.mathcert.com |
Same first word
Similar names
DNS History
9 records (6 active, 3 former)
○A89.31.143.12017-12-10 → 2017-12-10 · 4 obs
● 2017-12-10 23:46:30
○ 2026-04-02 14:54:40
○ 2026-08-11 14:39:18
○A89.31.143.112015-07-24 → 2015-07-24 · 3 obs
○ 2015-11-21 21:11:28
○ 2026-08-11 14:39:18
○A89.31.143.162015-11-21 → 2016-12-31 · 5 obs
● 2015-11-21 21:11:28
● 2016-12-31 12:11:34
○ 2017-12-10 23:46:30
○ 2026-08-11 14:39:18
●A89.31.143.902026-04-02 → 2026-08-11 · 3 obs
● 2026-04-02 14:54:40
● 2026-08-11 14:39:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | e.gtld-servers.net, c.gtld-servers.net, h.gtld-servers.net, m.gtld-servers.net... | - |
| mathcert.com | ns.udag.de, ns.udag.net, ns.udag.org | - |
✅ Authoritative Response
Server:217.160.80.253
NS records: ns.udag.de, ns.udag.net, ns.udag.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mathcert.com (unsigned zone)
⏱️ Timing
Total: 521ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 89.31.143.90 |
| NS | 3 | ns.udag.de, ns.udag.org... |
| MX | 2 | mx01.udag.de (pri: 20), mx00.udag.de (pri: 10) |
| TXT | 1 | v=spf1 include:_smtp.udag.de ~all |
| SOA | 1 | ns.udag.de hostmaster.united-domains.de |
Analysis
Hierarchy
The domain mail.mathcert.com falls under the parent mathcert.com.
IP Addresses
mathcert.com points to a single IP number: 89.31.143.90.
Additional host names — diebrandschutzplaner.com, traumtasche.com, cicada.one and two others — share IP numbers with mathcert.com.
Name Servers
The authoritative name servers for mathcert.com are ns.udag.de, ns.udag.net and ns.udag.org — three in total.
At least some of mathcert.com's name servers are shared with other domains, for example schneider.digital, webplanner.org, operadresden.com and two more.
ns.udag.de, ns.udag.net and ns.udag.org all resolve to exactly two IP numbers apiece: ns.udag.de → 217.160.80.253 and 2001:8d8:fe:53:217:160:80:253; ns.udag.net → 185.132.33.253 and 2607:f1c0:fe:53:185:132:33:253; ns.udag.org → 185.132.34.253 and 2607:f1c0:fe:53:185:132:34:253.
Mail Servers
mathcert.com has two mail servers: mx00.udag.de and mx01.udag.de.
mathcert.com shares the same mail server setup as other domains, including e-task.eu, musicmeetsmedia.de, hannesmeyer.com and two others.
Each of mx00.udag.de and mx01.udag.de has one IP address: mx00.udag.de uses 62.146.106.39 and mx01.udag.de uses 62.146.106.40.