theorem.online - robtex.com
theorem.online
| DNSSEC | ⚠️ Not signed | ||||||
| A | 91.195.241.232🇩🇪 SEDO91.195.240.0/23 -NET-PI | ||||||
| NS | sl1.sedo.com ⭐ | ||||||
| A | 91.195.240.173🇩🇪 SEDO91.195.240.0/23 -NET-PI | ||||||
| NS | sl2.sedo.com | ||||||
| A | 91.195.241.173🇩🇪 SEDO91.195.240.0/23 -NET-PI | ||||||
| MX | localhost ⭐ | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | sl1.sedo.comhostmaster@sedo.de 2018-05-16 #1 | ||||||
online
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns01.trs-dns.com ⭐ | ||||||
| NS | ns.trs-dns.com | ||||||
| NS | ns01.trs-dns.net | ||||||
| NS | ns10.trs-dns.info | ||||||
| NS | ns10.trs-dns.org | ||||||
| SOA | ns.trs-dns.comtrs-ops@tucows.com serial=1778305710 | ||||||
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●MXlocalhost2026-05-07 → 2026-05-09 · 2 obs
● 2026-05-09 06:07:26
●A91.195.241.2322026-05-07 → 2026-05-09 · 2 obs
● 2026-05-09 06:07:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| online | ns10.trs-dns.info, ns01.trs-dns.net, ns01.trs-dns.com, ns10.trs-dns.org | - |
| theorem.online | sl2.sedo.com, sl1.sedo.com | - |
✅ Authoritative Response
Server:91.195.240.173
NS records: sl2.sedo.com, sl1.sedo.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for theorem.online (unsigned zone)
⏱️ Timing
Total: 807ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 91.195.241.232 |
| NS | 2 | sl2.sedo.com, sl1.sedo.com |
| MX | 1 | localhost (pri: 0) |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | sl1.sedo.com hostmaster.sedo.de |
Analysis
IP Addresses
theorem.online points to a single IP address: 91.195.241.232.
Other host names such as loveforever.de, mx0.alfab.de, miamarket.de, bemestar.eu and workings.eu share IPs with theorem.online.
Name Servers
Two name servers sl1.sedo.com and sl2.sedo.com handle the delegation for theorem.online.
theorem.online shares the same name server setup as other domains, for example mail.realpost.de, www.riesterrenten-forum.de, sadara.eu, mail.cupon.com.ar and inzane.eu.
Host names with one IP number:
sl1.sedo.com points to 91.195.240.173; sl2.sedo.com points to 91.195.241.173.
Mail Servers
The localhost mail server handles theorem.online.
theorem.online shares the same mail server setup as other domains, including wykonawcy.glazurakrolewska.pl, fartdog.com, amateurindex.de, sslmail.com and rentpower.eu.