ct01.de - robtex.com
ct01.de
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2001:8d8:100f:f000::200🇩🇪 IONOS-AS2001:8d8::/32 DE-IONOS-20020910 | ||||||
| PTR | 2001-08d8-100f-f000-0000-0000-0000-0200.elastic-ssl.ui-r.com | ||||||
| A | 217.160.0.90🇩🇪 IONOS-AS217.160.0.0/16 IONOS-PA-3 | ||||||
| NS | docks13.rzone.de ⭐ | ||||||
| A | 2001:8d8:fe:53:5747:2a74:d:13🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific | ||||||
| PTR | docks13.rzone.de | ||||||
| A | 217.160.80.140🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific | ||||||
| PTR | docks13.rzone.de | ||||||
| NS | shades05.rzone.de | ||||||
| A | 2607:f1c0:fe:53:185:132:34:132🇺🇸 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 | shades05.rzone.de | ||||||
| A | 185.132.34.132🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS) | ||||||
| PTR | shades05.rzone.de | ||||||
| MX | smtpin.rzone.de ⭐ | ||||||
| A | 2a01:238:20a:202:50f0::1097🇩🇪 STRATO2a01:238:20a::/48 Strato AG | ||||||
| PTR | smtpin.rzone.de | ||||||
| A | 81.169.145.97🇩🇪 STRATO81.169.144.0/22 AG | ||||||
| PTR | smtpin.rzone.de | ||||||
| SOA | docks13.rzone.dehostmaster@strato-rz.de 2020-07-05 #15 | ||||||
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=1774806826 | ||||||
Subdomains
s21.ct01.de |
Same first word
Similar names
DNS History
10 records (5 active, 5 former)
●NSdocks13.rzone.de2026-02-19 → 2026-03-29 · 3 obs
● 2026-02-19 14:03:02
● 2026-03-29 18:18:46
○NSns1.first-ns.de2015-07-10 → 2017-03-13 · 4 obs
● 2017-03-13 13:04:34
○ 2026-02-19 14:03:02
○ 2026-03-29 18:18:46
○NSrobotns2.second-ns.de2015-07-10 → 2017-03-13 · 4 obs
● 2017-03-13 13:04:34
○ 2026-02-19 14:03:02
○ 2026-03-29 18:18:46
○NSrobotns3.second-ns.com2015-07-10 → 2017-03-13 · 4 obs
● 2017-03-13 13:04:34
○ 2026-02-19 14:03:02
○ 2026-03-29 18:18:46
●NSshades05.rzone.de2026-02-19 → 2026-03-29 · 3 obs
● 2026-02-19 14:03:02
● 2026-03-29 18:18:46
○MXs21.ct01.de2015-07-10 → 2017-03-13 · 4 obs
● 2017-03-13 13:04:34
○ 2026-02-19 14:03:02
○ 2026-03-29 18:18:46
●MXsmtpin.rzone.de2026-02-19 → 2026-03-29 · 3 obs
● 2026-02-19 14:03:02
● 2026-03-29 18:18:46
●A2001:8d8:100f:f000::2002026-02-19 → 2026-03-29 · 3 obs
● 2026-02-19 14:03:02
● 2026-03-29 18:18:46
○A213.239.206.2122015-07-10 → 2017-03-13 · 4 obs
● 2017-03-13 13:04:34
○ 2026-02-19 14:03:02
○ 2026-03-29 18:18:46
●A217.160.0.902026-02-19 → 2026-03-29 · 3 obs
● 2026-02-19 14:03:02
● 2026-03-29 18:18:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | f.nic.de, z.nic.de, a.nic.de | - |
| ct01.de | shades05.rzone.de, docks13.rzone.de | - |
✅ Authoritative Response
Server:217.160.80.140
NS records: shades05.rzone.de, docks13.rzone.de
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ct01.de (unsigned zone)
⏱️ Timing
Total: 935ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 217.160.0.90 |
| AAAA | 1 | 2001:8d8:100f:f000::200 |
| NS | 2 | docks13.rzone.de, shades05.rzone.de |
| MX | 1 | smtpin.rzone.de (pri: 5) |
| SOA | 1 | docks13.rzone.de hostmaster.strato-rz.de |
Analysis
Hierarchy
The parent of s21.ct01.de is ct01.de.
IP Addresses
ct01.de resolves to two IP numbers: 2001:8d8:100f:f000::200 and 217.160.0.90.
Other host names, for instance imkerverein-warburg.de, chatts.me, magnovital.at, pension-auf-dem-kiewitt.de and pv-heizstab.de share IP numbers with ct01.de.
Name Servers
Two name servers docks13.rzone.de and shades05.rzone.de handle delegation for ct01.de.
ct01.de uses the same name server setup as other domains, for example romue.com, cedele.eu, nachtlieferservice.de, empect.de and oskar-campus.com.
ct01.de partially shares name servers with other domains; examples include alprint.de, stonedragon.de, bauern-verlag.de, raeder-immobilien.de and rchowski.de.
These name servers are commonly used alongside shades01.rzone.de, docks19.rzone.de, shades18.rzone.de, docks17.rzone.de, docks03.rzone.de, shades08.rzone.de, docks06.rzone.de, docks14.rzone.de, shades13.rzone.de and shades10.rzone.de.
Host names with two IP numbers:
docks13.rzone.de points to: 2001:8d8:fe:53:5747:2a74:d:13 and 217.160.80.140
shades05.rzone.de points to: 2607:f1c0:fe:53:185:132:34:132 and 185.132.34.132
Mail Servers
ct01.de is handled by a single mail server, smtpin.rzone.de.
ct01.de has the same mail server setup as other domains, including www.dl.meuschke-it.de, uwe-janssen.de, bergertime.de, ertl-tracht.de and rasch-maisach.de.
Host smtpin.rzone.de resolves to two IPs: 2a01:238:20a:202:50f0::1097 and 81.169.145.97.