21-it.de - robtex.com
21-it.de
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=1776271872 | ||||||
Same first word
21-it.de |
Similar names
DNS History
10 records (9 active, 1 former)
●NSns1058.ui-dns.org2026-02-22 → 2026-04-15 · 2 obs
● 2026-04-15 16:55:52
●NSns1100.ui-dns.biz2026-02-22 → 2026-04-15 · 2 obs
● 2026-04-15 16:55:52
●NSns1115.ui-dns.com2026-02-22 → 2026-04-15 · 2 obs
● 2026-04-15 16:55:52
○MX21it-de0e.mail.protection.outlook.com2026-02-22 → 2026-03-24 · 3 obs
● 2026-03-24 03:02:30
○ 2026-04-15 16:55:52
●MXmx01.hornetsecurity.com2026-04-15 → 2026-04-15 · 2 obs
● 2026-04-15 16:55:52
●MXmx02.hornetsecurity.com2026-04-15 → 2026-04-15 · 2 obs
● 2026-04-15 16:55:52
●MXmx03.hornetsecurity.com2026-04-15 → 2026-04-15 · 2 obs
● 2026-04-15 16:55:52
●MXmx04.hornetsecurity.com2026-04-15 → 2026-04-15 · 2 obs
● 2026-04-15 16:55:52
●A212.227.9.2422026-02-22 → 2026-04-15 · 2 obs
● 2026-04-15 16:55:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | f.nic.de, z.nic.de, a.nic.de | - |
| 21-it.de | ns1058.ui-dns.org, ns1100.ui-dns.biz, ns1115.ui-dns.com, ns1049.ui-dns.de | - |
✅ Authoritative Response
Server:217.160.80.49
NS records: ns1058.ui-dns.org, ns1100.ui-dns.biz, ns1115.ui-dns.com, ns1049.ui-dns.de
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21-it.de (unsigned zone)
⏱️ Timing
Total: 938ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 212.227.9.242 |
| NS | 4 | ns1100.ui-dns.biz, ns1049.ui-dns.de... |
| MX | 4 | mx02.hornetsecurity.com (pri: 20), mx01.hornetsecurity.com (pri: 10)... |
| TXT | 1 | v=spf1 include:spf.hornetsecurity.com ~a |
| SOA | 1 | ns1058.ui-dns.org hostmaster.1und1.com |
Analysis
IP Addresses
21-it.de points to a single IP: 212.227.9.242.
Other host names, for instance 21-it-solution.de, 21itsolution.de, 21-it-solutions.de, erbrechtsanwaelte.com and ralmont.de share IP numbers with 21-it.de.
Name Servers
21-it.de's delegation is handled by four name servers: ns1100.ui-dns.biz, ns1115.ui-dns.com, ns1049.ui-dns.de and ns1058.ui-dns.org.
21-it.de partially shares name servers with other domains; examples include eskens.info, int-pms.net, tek321.com, accidentmotorcyclelawyer.com and publi-clicks.com.
These name servers are commonly used alongside ns1049.ui-dns.org, ns1049.ui-dns.biz, ns1049.ui-dns.com, ns1058.ui-dns.biz, ns1058.ui-dns.com, ns1058.ui-dns.de, ns1115.ui-dns.biz, ns1115.ui-dns.de, ns1115.ui-dns.org and ns1100.ui-dns.com.
Host names with two IPs:
ns1100.ui-dns.biz points to 2001:8d8:fe:53:0:d9a0:5164:100 and 217.160.81.100
ns1115.ui-dns.com points to 2001:8d8:fe:53:0:d9a0:5273:100 and 217.160.82.115
ns1049.ui-dns.de points to 2001:8d8:fe:53:0:d9a0:5031:100 and 217.160.80.49
ns1058.ui-dns.org points to 2001:8d8:fe:53:0:d9a0:533a:100 and 217.160.83.58
Mail Servers
21-it.de is handled by four mail servers: mx01.hornetsecurity.com, mx02.hornetsecurity.com, mx03.hornetsecurity.com and mx04.hornetsecurity.com.
21-it.de shares some mail servers with other domains, at least partially, such as netcircuit.de, incon.it, inspiringnetworks.com, cewe.ro and viviincampagna.it.
Host names with one IP:
mx01.hornetsecurity.com points to 94.100.132.8
mx02.hornetsecurity.com points to 94.100.136.8
mx03.hornetsecurity.com points to 94.100.134.8
mx04.hornetsecurity.com points to 94.100.136.7