21by9.com - robtex.com
21by9.com
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=1774480552 | ||||||
Same first word
21by9.com |
Similar names
DNS History
12 records (5 active, 7 former)
○NSdns1.name-services.com2016-02-28 → 2016-02-28 · 3 obs
○ 2016-06-20 14:30:26
○ 2026-03-25 23:27:20
○NSdns2.name-services.com2016-02-28 → 2016-02-28 · 3 obs
○ 2016-06-20 14:30:26
○ 2026-03-25 23:27:20
○NSdns3.name-services.com2016-02-28 → 2016-02-28 · 3 obs
○ 2016-06-20 14:30:26
○ 2026-03-25 23:27:20
○NSdns4.name-services.com2016-02-28 → 2016-02-28 · 3 obs
○ 2016-06-20 14:30:26
○ 2026-03-25 23:27:20
○NSdns5.name-services.com2016-02-28 → 2016-02-28 · 3 obs
○ 2016-06-20 14:30:26
○ 2026-03-25 23:27:20
●NSns19.domaincontrol.com2026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 23:27:20
●NSns20.domaincontrol.com2026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 23:27:20
●MX21by9-com.mail.protection.outlook.com2026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 23:27:20
○MXp.nsm.ctmail.com2016-02-28 → 2016-02-28 · 3 obs
○ 2016-06-20 14:30:26
○ 2026-03-25 23:27:20
●A13.248.243.52026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 23:27:20
●A76.223.105.2302026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 23:27:20
○A98.124.243.452016-02-28 → 2016-02-28 · 3 obs
○ 2016-06-20 14:30:26
○ 2026-03-25 23:27:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| 21by9.com | ns19.domaincontrol.com, ns20.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:97.74.109.10
NS records: ns19.domaincontrol.com, ns20.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21by9.com (unsigned zone)
⏱️ Timing
Total: 99ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 76.223.105.230, 13.248.243.5 |
| NS | 2 | ns19.domaincontrol.com, ns20.domaincontrol.com |
| MX | 1 | 21by9-com.mail.protection.outlook.com (p |
| TXT | 1 | v=spf1 include:spf.protection.outlook.co |
| SOA | 1 | ns19.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns19.domaincontrol.com, ns19.domaincontrol.com, ns20.domaincontrol.com...)
Analysis
IP Addresses
21by9.com points to two IP numbers: 13.248.243.5 and 76.223.105.230.
Other host names, for instance helmick-assoc.com, yopantea.com, txfx.org, tucasaproperties.com and organizedecorando.com share IP numbers with 21by9.com.
Name Servers
Delegation for 21by9.com rests with two name servers, ns19.domaincontrol.com and ns20.domaincontrol.com.
21by9.com shares the same name server setup as other domains, including chiefsesc.com, doughebenthal.com, drummerswanted.com, languagebooking.com and southernskies.net.
21by9.com shares name servers with other domains at least partially, for example obrientm.ca.
Host names with two IP numbers: ns19.domaincontrol.com points to 2603:5:21d0::a and 97.74.109.10; ns20.domaincontrol.com points to 2603:5:22d0::a and 173.201.77.10.
Mail Servers
21by9.com is handled by a single mail server, 21by9-com.mail.protection.outlook.com.
21by9-com.mail.protection.outlook.com resolves to eight IP addresses: 2a01:111:f403:c802::, 2a01:111:f403:c92c::4, 2a01:111:f403:f804::3, 2a01:111:f403:f902::, 52.101.10.8, 52.101.10.14, 52.101.41.58 and 52.101.50.4.