sfsr.de - robtex.com
sfsr.de
| DNSSEC | ⚠️ Not signed | ||||||
| A | 188.94.248.23🇩🇪 MITTWALD-AS188.94.248.0/21 Mittwald CM Service GmbH und Co. KG | ||||||
| PTR | r21457.agenturserver.it | ||||||
| NS | pns.dtag.de ⭐ | ||||||
| A | 2003:40:8000::100🇩🇪 DTAG2003::/19 Deutsche Telekom large PA space | ||||||
| PTR | pns.dtag.de | ||||||
| A | 194.25.0.125🇩🇪 DTAG194.25.0.0/16 Deutsche Telekom AG, Internet service provider | ||||||
| PTR | pns.dtag.de | ||||||
| NS | ns1.telekom.net | ||||||
| A | 2003:180:a:1000::53🇩🇪 DTAG2003::/19 Deutsche Telekom large PA space | ||||||
| A | 212.185.24.65🇩🇪 DTAG212.184.0.0/15 Deutsche Telekom AG, Internet service provider | ||||||
| PTR | ns1.telekom.net | ||||||
| MX | mail.sfsr.de ⭐ | ||||||
| A | 212.144.119.101🇩🇪 VODANET212.144.0.0/16 Mannesmann o.tel.o GmbH & Co Germany | ||||||
| SOA | pns.dtag.dednsadmin@nic.dtag.de 2023-06-27 #0 | ||||||
de
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | f.nic.de ⭐ | ||||||
| NS | a.nic.de | ||||||
| NS | l.de.net ⚠️ Not in parent delegation | ||||||
| NS | n.de.net ⚠️ Not in parent delegation | ||||||
| NS | s.de.net ⚠️ Not in parent delegation | ||||||
| NS | z.nic.de | ||||||
| SOA | f.nic.dedns-operations@denic.de serial=1784164069 | ||||||
Subdomains
Same first word
Similar names
DNS History
5 records (4 active, 1 former)
●NSns1.telekom.net2026-06-27 → 2026-07-16 · 3 obs
● 2026-06-27 02:11:06
● 2026-07-16 01:35:48
○NSsecondary007.dtag.net2018-05-06 → 2018-05-06 · 3 obs
○ 2026-06-27 02:11:06
○ 2026-07-16 01:35:48
●MXmail.sfsr.de2018-05-06 → 2026-07-16 · 2 obs
● 2026-07-16 01:35:48
●A188.94.248.232026-06-27 → 2026-07-16 · 2 obs
● 2026-07-16 01:35:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| sfsr.de | ns1.telekom.net, pns.dtag.de | 2 records |
✅ Authoritative Response
Server:212.185.24.65
NS records: ns1.telekom.net, pns.dtag.de
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sfsr.de (unsigned zone)
⏱️ Timing
Total: 1041ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 188.94.248.23 |
| NS | 2 | ns1.telekom.net, pns.dtag.de |
| MX | 1 | mail.sfsr.de (pri: 10) |
| SOA | 1 | pns.dtag.de dnsadmin.nic.dtag.de |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (pns.dtag.de, pns.dtag.de)
Analysis
Hierarchy
www.sfsr.de and mail.sfsr.de are both subdomains of sfsr.de.
IP Addresses
sfsr.de resolves to one IP address: 188.94.248.23.
sfs-w.de, www.sfsg.de, sfsg.de and two other host names share IP numbers with sfsr.de.
Name Servers
sfsr.de has two authoritative name servers — pns.dtag.de and ns1.telekom.net.
sfsr.de uses the same name servers as several other domains — among them t-mobilecorporation.com, tsystems.info, schwenk-transportbeton.eu and two more.
sfsr.de shares at least some of its name servers with other domains, including 241.139.87.in-addr.arpa, 1.244.217.in-addr.arpa, 231.151.80.in-addr.arpa and two others.
These name servers are frequently seen alongside secondary006.dtag.net, secondary007.dtag.net, secondary004.dtag.net and 3 other name servers.
Both pns.dtag.de and ns1.telekom.net have two IP addresses each. pns.dtag.de resolves to 194.25.0.125 and 2003:40:8000::100; ns1.telekom.net resolves to 212.185.24.65 and 2003:180:a:1000::53.
Mail Servers
Mail for sfsr.de is handled by a single mail server, mail.sfsr.de.
mail.sfsr.de points to one IP number — 212.144.119.101.