21stcenturytek.com - robtex.com
21stcenturytek.com
| DNSSEC | ⚠️ Not signed | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1776154122 | ||||||
DNS History
18 records (0 active, 18 former)
○NSns-us.1and1-dns.com2016-02-11 → 2017-02-08 · 5 obs
○ 2015-10-18 00:47:40
● 2016-02-11 16:49:14
● 2017-02-08 03:24:12
○ 2020-01-15 17:43:46
○ 2026-04-14 08:18:40
● 2016-02-11 16:49:14
● 2017-02-08 03:24:12
○ 2020-01-15 17:43:46
○ 2026-04-14 08:18:40
○NSns-us.1and1-dns.de2016-02-11 → 2017-02-08 · 5 obs
○ 2015-10-18 00:47:40
● 2016-02-11 16:49:14
● 2017-02-08 03:24:12
○ 2020-01-15 17:43:46
○ 2026-04-14 08:18:40
● 2016-02-11 16:49:14
● 2017-02-08 03:24:12
○ 2020-01-15 17:43:46
○ 2026-04-14 08:18:40
○NSns-us.1and1-dns.org2016-02-11 → 2017-02-08 · 5 obs
○ 2015-10-18 00:47:40
● 2016-02-11 16:49:14
● 2017-02-08 03:24:12
○ 2020-01-15 17:43:46
○ 2026-04-14 08:18:40
● 2016-02-11 16:49:14
● 2017-02-08 03:24:12
○ 2020-01-15 17:43:46
○ 2026-04-14 08:18:40
○NSns-us.1and1-dns.us2016-02-11 → 2017-02-08 · 5 obs
○ 2015-10-18 00:47:40
● 2016-02-11 16:49:14
● 2017-02-08 03:24:12
○ 2020-01-15 17:43:46
○ 2026-04-14 08:18:40
● 2016-02-11 16:49:14
● 2017-02-08 03:24:12
○ 2020-01-15 17:43:46
○ 2026-04-14 08:18:40
○NSns1.afternic.com2008-03-17 → 2008-03-17 · 3 obs
● 2008-03-17 13:27:40
○ 2015-10-18 00:47:40
○ 2026-04-14 08:18:40
○ 2015-10-18 00:47:40
○ 2026-04-14 08:18:40
○NSns1016.ui-dns.biz2020-01-15 → 2020-01-15 · 4 obs
○ 2017-02-08 03:24:12
● 2020-01-15 17:43:46
○ 2026-03-12 05:29:02
○ 2026-04-14 08:18:40
● 2020-01-15 17:43:46
○ 2026-03-12 05:29:02
○ 2026-04-14 08:18:40
○NSns1016.ui-dns.com2020-01-15 → 2020-01-15 · 4 obs
○ 2017-02-08 03:24:12
● 2020-01-15 17:43:46
○ 2026-03-12 05:29:02
○ 2026-04-14 08:18:40
● 2020-01-15 17:43:46
○ 2026-03-12 05:29:02
○ 2026-04-14 08:18:40
○NSns1016.ui-dns.de2020-01-15 → 2020-01-15 · 4 obs
○ 2017-02-08 03:24:12
● 2020-01-15 17:43:46
○ 2026-03-12 05:29:02
○ 2026-04-14 08:18:40
● 2020-01-15 17:43:46
○ 2026-03-12 05:29:02
○ 2026-04-14 08:18:40
○NSns1016.ui-dns.org2020-01-15 → 2020-01-15 · 4 obs
○ 2017-02-08 03:24:12
● 2020-01-15 17:43:46
○ 2026-03-12 05:29:02
○ 2026-04-14 08:18:40
● 2020-01-15 17:43:46
○ 2026-03-12 05:29:02
○ 2026-04-14 08:18:40
○NSns2.afternic.com2008-03-17 → 2008-03-17 · 3 obs
● 2008-03-17 13:27:40
○ 2015-10-18 00:47:40
○ 2026-04-14 08:18:40
○ 2015-10-18 00:47:40
○ 2026-04-14 08:18:40
○MXmx00.1and1.com2016-02-11 → 2020-01-15 · 4 obs
● 2016-02-11 16:49:14
● 2020-01-15 17:43:46
○ 2026-03-12 05:29:02
○ 2026-04-14 08:18:40
● 2020-01-15 17:43:46
○ 2026-03-12 05:29:02
○ 2026-04-14 08:18:40
○MXmx01.1and1.com2016-02-11 → 2020-01-15 · 4 obs
● 2016-02-11 16:49:14
● 2020-01-15 17:43:46
○ 2026-03-12 05:29:02
○ 2026-04-14 08:18:40
● 2020-01-15 17:43:46
○ 2026-03-12 05:29:02
○ 2026-04-14 08:18:40
○A216.250.121.882017-02-08 → 2017-02-08 · 4 obs
○ 2016-05-04 05:54:24
● 2017-02-08 03:24:12
○ 2020-01-15 17:43:46
○ 2026-04-14 08:18:40
● 2017-02-08 03:24:12
○ 2020-01-15 17:43:46
○ 2026-04-14 08:18:40
○A2607:f1c0:1000:10e8:5e68:d92e:882d:172017-02-08 → 2017-02-08 · 4 obs
○ 2016-05-04 05:54:24
● 2017-02-08 03:24:12
○ 2020-01-15 17:43:46
○ 2026-04-14 08:18:40
● 2017-02-08 03:24:12
○ 2020-01-15 17:43:46
○ 2026-04-14 08:18:40
○A2607:f1c0:1000:10e8:d50:e8b5:f338:b0012016-02-11 → 2016-05-04 · 4 obs
● 2016-02-11 16:49:14
● 2016-05-04 05:54:24
○ 2017-02-08 03:24:12
○ 2026-04-14 08:18:40
● 2016-05-04 05:54:24
○ 2017-02-08 03:24:12
○ 2026-04-14 08:18:40
○A2607:f1c0:100f:f000::2662020-01-15 → 2020-01-15 · 4 obs
○ 2017-02-08 03:24:12
● 2020-01-15 17:43:46
○ 2026-03-12 05:29:02
○ 2026-04-14 08:18:40
● 2020-01-15 17:43:46
○ 2026-03-12 05:29:02
○ 2026-04-14 08:18:40
○A74.208.236.1832020-01-15 → 2020-01-15 · 4 obs
○ 2017-02-08 03:24:12
● 2020-01-15 17:43:46
○ 2026-03-12 05:29:02
○ 2026-04-14 08:18:40
● 2020-01-15 17:43:46
○ 2026-03-12 05:29:02
○ 2026-04-14 08:18:40
○A74.208.63.182016-02-11 → 2016-05-04 · 4 obs
● 2016-02-11 16:49:14
● 2016-05-04 05:54:24
○ 2017-02-08 03:24:12
○ 2026-04-14 08:18:40
● 2016-05-04 05:54:24
○ 2017-02-08 03:24:12
○ 2026-04-14 08:18:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
✅ Authoritative Response
Server:192.5.6.30
NS records: a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net, e.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net, h.gtld-servers.net, i.gtld-servers.net, j.gtld-servers.net, k.gtld-servers.net, l.gtld-servers.net, m.gtld-servers.net
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 97ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|