instructors.biz - robtex.com
instructors.biz
| DNSSEC | ⚠️ Not signed | ||||||
| A | 13.248.169.48🇺🇸 Amazon13.248.160.0/20 | ||||||
| PTR | a904c694c05102f30.awsglobalaccelerator.com | ||||||
| A | 76.223.54.146🇺🇸 Amazon76.223.48.0/20 | ||||||
| NS | ns2.afternic.com ⭐ | ||||||
| A | 2603:5:2226::45🇺🇸 GODADDY-DNS2603:5:2220::/44 | ||||||
| PTR | ns2.afternic.com | ||||||
| A | 173.201.66.69🇺🇸 GODADDY-DNS173.201.66.0/23 | ||||||
| PTR | ns2.afternic.com | ||||||
| NS | ns1.afternic.com | ||||||
| A | 2603:5:2126::45🇺🇸 GODADDY-DNS2603:5:2120::/44 | ||||||
| PTR | ns1.afternic.com | ||||||
| A | 97.74.98.69🇺🇸 GODADDY-DNS97.74.98.0/23 | ||||||
| PTR | ns1.afternic.com | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns2.afternic.comdns@jomax.net serial=1 | ||||||
biz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld.biz ⭐ | ||||||
| NS | b.gtld.biz | ||||||
| NS | c.gtld.biz | ||||||
| NS | m.gtld.biz | ||||||
| NS | n.gtld.biz | ||||||
| NS | w.gtld.biz | ||||||
| NS | x.gtld.biz | ||||||
| NS | y.gtld.biz | ||||||
| SOA | a.gtld.bizadmin@tldns.godaddy serial=1778332840 | ||||||
Same first word
instructors.pl |
instructors.co |
instructors.de |
instructors.biz |
instructors.co.uk |
instructors.ph |
instructors.org |
instructors.ca |
instructors.ru |
instructors.jp |
instructors.hk |
Similar names
DNS History
14 records (4 active, 10 former)
○NSns09.domaincontrol.com2016-01-20 → 2016-01-20 · 4 obs
○ 2016-01-14 12:18:26
● 2016-01-20 01:48:40
○ 2016-04-15 17:44:38
○ 2026-05-09 13:48:26
● 2016-01-20 01:48:40
○ 2016-04-15 17:44:38
○ 2026-05-09 13:48:26
●NSns1.afternic.com2026-03-25 → 2026-05-09 · 3 obs
○ 2017-07-01 22:18:24
● 2026-03-25 18:41:20
● 2026-05-09 13:48:26
● 2026-03-25 18:41:20
● 2026-05-09 13:48:26
○NSns1.sedoparking.com2015-07-15 → 2017-07-01 · 7 obs
● 2015-07-15 03:50:14
● 2016-01-14 12:18:26
○ 2016-01-20 01:48:40
● 2016-04-15 17:44:38
● 2017-07-01 22:18:24
○ 2026-03-25 18:41:20
○ 2026-05-09 13:48:26
● 2016-01-14 12:18:26
○ 2016-01-20 01:48:40
● 2016-04-15 17:44:38
● 2017-07-01 22:18:24
○ 2026-03-25 18:41:20
○ 2026-05-09 13:48:26
○NSns10.domaincontrol.com2016-01-20 → 2016-01-20 · 4 obs
○ 2016-01-14 12:18:26
● 2016-01-20 01:48:40
○ 2016-04-15 17:44:38
○ 2026-05-09 13:48:26
● 2016-01-20 01:48:40
○ 2016-04-15 17:44:38
○ 2026-05-09 13:48:26
●NSns2.afternic.com2026-03-25 → 2026-05-09 · 3 obs
○ 2017-07-01 22:18:24
● 2026-03-25 18:41:20
● 2026-05-09 13:48:26
● 2026-03-25 18:41:20
● 2026-05-09 13:48:26
○NSns2.sedoparking.com2015-07-15 → 2017-07-01 · 7 obs
● 2015-07-15 03:50:14
● 2016-01-14 12:18:26
○ 2016-01-20 01:48:40
● 2016-04-15 17:44:38
● 2017-07-01 22:18:24
○ 2026-03-25 18:41:20
○ 2026-05-09 13:48:26
● 2016-01-14 12:18:26
○ 2016-01-20 01:48:40
● 2016-04-15 17:44:38
● 2017-07-01 22:18:24
○ 2026-03-25 18:41:20
○ 2026-05-09 13:48:26
○MXlocalhost2016-11-26 → 2017-07-01 · 5 obs
○ 2016-04-15 17:44:38
● 2016-11-26 19:00:50
● 2017-07-01 22:18:24
○ 2026-03-25 18:41:20
○ 2026-05-09 13:48:26
● 2016-11-26 19:00:50
● 2017-07-01 22:18:24
○ 2026-03-25 18:41:20
○ 2026-05-09 13:48:26
○MXmail.nickstel.com2015-07-15 → 2016-04-15 · 6 obs
● 2015-07-15 03:50:14
● 2016-01-14 12:18:26
○ 2016-01-20 01:48:40
● 2016-04-15 17:44:38
○ 2016-11-26 19:00:50
○ 2026-05-09 13:48:26
● 2016-01-14 12:18:26
○ 2016-01-20 01:48:40
● 2016-04-15 17:44:38
○ 2016-11-26 19:00:50
○ 2026-05-09 13:48:26
○MXmailstore1.secureserver.net2016-01-20 → 2016-01-20 · 4 obs
○ 2016-01-14 12:18:26
● 2016-01-20 01:48:40
○ 2016-04-15 17:44:38
○ 2026-05-09 13:48:26
● 2016-01-20 01:48:40
○ 2016-04-15 17:44:38
○ 2026-05-09 13:48:26
○MXsmtp.secureserver.net2016-01-20 → 2016-01-20 · 4 obs
○ 2016-01-14 12:18:26
● 2016-01-20 01:48:40
○ 2016-04-15 17:44:38
○ 2026-05-09 13:48:26
● 2016-01-20 01:48:40
○ 2016-04-15 17:44:38
○ 2026-05-09 13:48:26
●A13.248.169.482026-03-25 → 2026-05-09 · 3 obs
○ 2017-07-01 22:18:24
● 2026-03-25 18:41:20
● 2026-05-09 13:48:26
● 2026-03-25 18:41:20
● 2026-05-09 13:48:26
○A184.168.221.622016-01-20 → 2016-01-20 · 4 obs
○ 2016-01-14 12:18:26
● 2016-01-20 01:48:40
○ 2016-04-15 17:44:38
○ 2026-05-09 13:48:26
● 2016-01-20 01:48:40
○ 2016-04-15 17:44:38
○ 2026-05-09 13:48:26
○A72.52.4.1212015-07-15 → 2017-07-01 · 7 obs
● 2015-07-15 03:50:14
● 2016-01-14 12:18:26
○ 2016-01-20 01:48:40
● 2016-04-15 17:44:38
● 2017-07-01 22:18:24
○ 2026-03-25 18:41:20
○ 2026-05-09 13:48:26
● 2016-01-14 12:18:26
○ 2016-01-20 01:48:40
● 2016-04-15 17:44:38
● 2017-07-01 22:18:24
○ 2026-03-25 18:41:20
○ 2026-05-09 13:48:26
●A76.223.54.1462026-03-25 → 2026-05-09 · 3 obs
○ 2017-07-01 22:18:24
● 2026-03-25 18:41:20
● 2026-05-09 13:48:26
● 2026-03-25 18:41:20
● 2026-05-09 13:48:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| biz | a.gtld.biz, b.gtld.biz, c.gtld.biz, m.gtld.biz... | - |
| instructors.biz | ns1.afternic.com, ns2.afternic.com | - |
✅ Authoritative Response
Server:97.74.98.69
NS records: ns1.afternic.com, ns2.afternic.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for instructors.biz (unsigned zone)
⏱️ Timing
Total: 1505ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 76.223.54.146, 13.248.169.48 |
| NS | 2 | ns1.afternic.com, ns2.afternic.com |
| MX | 1 | . (pri: 0) |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns1.afternic.com dns.jomax.net |
Analysis
IP Addresses
instructors.biz has two IP numbers: 13.248.169.48 and 76.223.54.146.
Name Servers
instructors.biz's delegation uses two name servers: ns1.afternic.com and ns2.afternic.com.
Host names with two IPs:
ns1.afternic.com points to 2603:5:2126::45 and 97.74.98.69
ns2.afternic.com points to 2603:5:2226::45 and 173.201.66.69