admin.ostfc.de - dns.ninja

admin.ostfc.de

DNSSEC⚠️ Not signed
A91.195.241.232🇩🇪 SEDO91.195.240.0/23 -NET-PI
NSsl1.sedo.com ⭐ ⚠️ Not in parent delegation
A91.195.240.173🇩🇪 SEDO91.195.240.0/23 -NET-PI
NSsl2.sedo.com ⚠️ Not in parent delegation
A91.195.241.173🇩🇪 SEDO91.195.240.0/23 -NET-PI
MXlocalhost ⭐
TXTv=spf1 -all
SOAsl1.sedo.comhostmaster@sedo.de 2018-05-16 #1

ostfc.de

DNSSEC⚠️ Not signed
A91.195.241.232🇩🇪 SEDO91.195.240.0/23 -NET-PI
NSsl1.sedo.com ⭐
NSsl2.sedo.com
MXlocalhost ⭐
TXTv=spf1 -all
SOAsl1.sedo.comhostmaster@sedo.de 2018-05-16 #1
WOT: SAFE (67/100)
WOT: SAFE (89/100)

Subdomains

claude-api.admin.ostfc.de

Same first word

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admin.cn
admin.mx
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DNS History

4 records (4 active, 0 former)

NSsl1.sedo.comsl2.sedo.comMXlocalhostA91.195.241.232
●NSsl1.sedo.com2026-07-12 → 2026-08-05 · 2 obs
● 2026-07-12 04:40:32
● 2026-08-05 00:27:08
●NSsl2.sedo.com2026-07-12 → 2026-08-05 · 2 obs
● 2026-07-12 04:40:32
● 2026-08-05 00:27:08
●MXlocalhost2026-07-12 → 2026-08-05 · 2 obs
● 2026-07-12 04:40:32
● 2026-08-05 00:27:08
●A91.195.241.2322026-07-12 → 2026-08-05 · 2 obs
● 2026-07-12 04:40:32
● 2026-08-05 00:27:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
def.nic.de, a.nic.de, z.nic.de-
ostfc.desl1.sedo.com, sl2.sedo.com-

✅ Authoritative Response

Server:91.195.240.173

NS records: sl1.sedo.com, sl2.sedo.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ostfc.de (unsigned zone)

⏱️ Timing

Total: 673ms | Queries: -

📄 Records

TypeCountSample Data
A191.195.241.232
NS2sl1.sedo.com, sl2.sedo.com
MX1localhost (pri: 0)
TXT1v=spf1 -all
SOA1sl1.sedo.com hostmaster.sedo.de

Analysis

Hierarchy

The domain claude-api.admin.ostfc.de falls under the parent admin.ostfc.de.

IP Addresses

admin.ostfc.de resolves to one IP address: 91.195.241.232.

candy-crush.de, mx0.casab.de, omega-druck.de and two other host names share IP numbers with admin.ostfc.de.

Name Servers

DNS delegation for admin.ostfc.de points to two name servers: sl1.sedo.com and sl2.sedo.com.

admin.ostfc.de uses the same name servers as several other domains — among them ekoprint.eu, wisedata.eu, b2.at and two more.

admin.ostfc.de has partial name server overlap with other domains, including 0hermes.api.cryptopool.eu.

Each of sl1.sedo.com and sl2.sedo.com has one IP address: sl1.sedo.com uses 91.195.240.173 and sl2.sedo.com uses 91.195.241.173.

Mail Servers

Mail for admin.ostfc.de is handled by a single mail server, localhost.

admin.ostfc.de uses an identical mail server configuration to several other domains — among them pulac.nl, eseai.com, mail.e-mc.de and two more.