21penn.com - robtex.com
21penn.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 158.106.223.50🇺🇸 PILOT-1158.106.192.0/19 AS46450 | ||||||
| PTR | mail.21penn.com | ||||||
| PTR | mail.368ninth.com | ||||||
| NS | ns61.domaincontrol.com ⭐ | ||||||
| A | 2603:5:2153::20🇺🇸 GODADDY-DNS2603:5:2150::/44 | ||||||
| PTR | ns61.domaincontrol.com | ||||||
| A | 97.74.101.32🇺🇸 GODADDY-DNS97.74.100.0/23 | ||||||
| PTR | ns61.domaincontrol.com | ||||||
| NS | ns62.domaincontrol.com | ||||||
| A | 2603:5:2253::20🇺🇸 GODADDY-DNS2603:5:2250::/44 | ||||||
| PTR | ns62.domaincontrol.com | ||||||
| A | 173.201.69.32🇺🇸 GODADDY-DNS173.201.68.0/23 | ||||||
| PTR | ns62.domaincontrol.com | ||||||
| MX | mail2.21penn.com ⭐ | ||||||
| A | 23.246.85.162🇺🇸 RR-NYC23.246.64.0/18 Charter Communications L-TWC NYC AS12271 | ||||||
| PTR | mail.21penn.com | ||||||
| MX | mail.21penn.com(10) | ||||||
| A | 158.106.223.50🇺🇸 PILOT-1158.106.192.0/19 AS46450 | ||||||
| PTR | mail.21penn.com | ||||||
| PTR | mail.368ninth.com | ||||||
| TXT | v=spf1 a mx ip4:158.106.223.50/28 a:mail.21penn.com -all | ||||||
| SOA | ns61.domaincontrol.comdns@jomax.net 2026-03-08 #1 | ||||||
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=1774500502 | ||||||
Subdomains
Same first word
21penn.com |
Similar names
DNS History
7 records (5 active, 2 former)
●NSns61.domaincontrol.com2015-08-06 → 2026-03-26 · 2 obs
● 2026-03-26 04:51:10
●NSns62.domaincontrol.com2015-08-06 → 2026-03-26 · 2 obs
● 2026-03-26 04:51:10
●MXmail.21penn.com2015-08-06 → 2026-03-26 · 2 obs
● 2026-03-26 04:51:10
●MXmail2.21penn.com2016-12-31 → 2026-03-26 · 3 obs
● 2016-12-31 04:02:54
● 2026-03-26 04:51:10
●A158.106.223.502026-03-12 → 2026-03-26 · 3 obs
● 2026-03-12 15:35:30
● 2026-03-26 04:51:10
○A23.246.85.1622015-08-06 → 2016-04-09 · 4 obs
● 2016-04-09 16:24:32
○ 2016-12-31 04:02:54
○ 2026-03-26 04:51:10
○A50.74.168.2422016-12-31 → 2017-12-26 · 5 obs
● 2016-12-31 04:02:54
● 2017-12-26 13:44:54
○ 2026-03-12 15:35:30
○ 2026-03-26 04:51:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, l.gtld-servers.net, d.gtld-servers.net, h.gtld-servers.net... | - |
| 21penn.com | ns61.domaincontrol.com, ns62.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:97.74.101.32
NS records: ns61.domaincontrol.com, ns62.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21penn.com (unsigned zone)
⏱️ Timing
Total: 154ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 158.106.223.50 |
| NS | 2 | ns61.domaincontrol.com, ns62.domaincontrol.com |
| MX | 2 | mail.21penn.com (pri: 0), mail2.21penn.com (pri: 10) |
| TXT | 1 | v=spf1 a mx ip4:158.106.223.50/28 a:mail |
| SOA | 1 | ns61.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns61.domaincontrol.com, ns61.domaincontrol.com, ns62.domaincontrol.com...)
Analysis
Hierarchy
21penn.com is a parent of mail.21penn.com and mail2.21penn.com.
IP Addresses
21penn.com resolves to one IP number: 158.106.223.50.
Other host names for instance mail.21penn.com and mail.368ninth.com share IP numbers with 21penn.com.
Name Servers
21penn.com's delegation uses two name servers: ns61.domaincontrol.com and ns62.domaincontrol.com.
21penn.com uses the same name server setup as other domains, such as trilucero.com, hhmerchants.com, yleden.com, avonsnowboards.com and crommett.it.
21penn.com at least partially shares name servers with other domains, for example adpm.us.
Host names with two IPs:
ns61.domaincontrol.com points to 2603:5:2153::20 and 97.74.101.32
ns62.domaincontrol.com points to 2603:5:2253::20 and 173.201.69.32
Mail Servers
21penn.com is served by two mail servers mail2.21penn.com and mail.21penn.com.
Host names with a single IP address: mail2.21penn.com points to 23.246.85.162; mail.21penn.com points to 158.106.223.50.