u21.ca - robtex.com
u21.ca
| 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 | ns3.afternic.com ⭐ | ||||||
| A | 97.74.98.65🇺🇸 GODADDY-DNS97.74.98.0/23 | ||||||
| PTR | ns3.afternic.com | ||||||
| NS | ns4.afternic.com | ||||||
| A | 173.201.66.65🇺🇸 GODADDY-DNS173.201.66.0/23 | ||||||
| PTR | ns4.namefind.com | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns3.afternic.comdns@jomax.net 2025-10-01 #0 | ||||||
ca
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | prd-czp-05.corp.cira.ca ⭐ | ||||||
| NS | any.ca-servers.ca | ||||||
| NS | c.ca-servers.ca | ||||||
| NS | d.ca-servers.ca | ||||||
| NS | j.ca-servers.ca | ||||||
| SOA | prd-czp-05.corp.cira.caadmin-dns@cira.ca serial=2603280400 | ||||||
Subdomains
mail.u21.ca |
Same first word
Similar names
DNS History
11 records (4 active, 7 former)
○NSns1.dynadot.com2015-08-18 → 2017-08-31 · 5 obs
● 2015-08-18 17:52:36
● 2017-08-31 03:11:08
○ 2017-10-17 07:05:50
○ 2026-03-28 05:02:16
○NSns2.dynadot.com2015-08-18 → 2017-08-31 · 5 obs
● 2015-08-18 17:52:36
● 2017-08-31 03:11:08
○ 2017-10-17 07:05:50
○ 2026-03-28 05:02:16
●NSns3.afternic.com2026-03-27 → 2026-03-28 · 3 obs
● 2026-03-27 09:53:10
● 2026-03-28 05:02:16
○NSns3.tektonic.net2009-01-17 → 2009-01-17 · 3 obs
○ 2015-08-18 17:52:36
○ 2026-03-28 05:02:16
●NSns4.afternic.com2026-03-27 → 2026-03-28 · 3 obs
● 2026-03-27 09:53:10
● 2026-03-28 05:02:16
○NSns4.tektonic.net2009-01-17 → 2009-01-17 · 3 obs
○ 2015-08-18 17:52:36
○ 2026-03-28 05:02:16
○MXmail.u21.ca2009-01-17 → 2009-01-17 · 3 obs
○ 2015-08-18 17:52:36
○ 2026-03-28 05:02:16
●A13.248.169.482026-03-27 → 2026-03-28 · 3 obs
● 2026-03-27 09:53:10
● 2026-03-28 05:02:16
○A206.123.88.942009-01-17 → 2009-01-17 · 3 obs
○ 2015-08-18 17:52:36
○ 2026-03-28 05:02:16
○A52.0.217.442015-08-18 → 2017-08-31 · 5 obs
● 2015-08-18 17:52:36
● 2017-08-31 03:11:08
○ 2017-10-17 07:05:50
○ 2026-03-28 05:02:16
●A76.223.54.1462026-03-27 → 2026-03-28 · 3 obs
● 2026-03-27 09:53:10
● 2026-03-28 05:02:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ca | d.ca-servers.ca, any.ca-servers.ca, c.ca-servers.ca, j.ca-servers.ca | - |
| u21.ca | ns3.afternic.com, ns4.afternic.com | - |
✅ Authoritative Response
Server:97.74.98.65
NS records: ns3.afternic.com, ns4.afternic.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for u21.ca (unsigned zone)
⏱️ Timing
Total: 679ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 13.248.169.48, 76.223.54.146 |
| NS | 2 | ns3.afternic.com, ns4.afternic.com |
| MX | 1 | . (pri: 0) |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns3.afternic.com dns.jomax.net |
Analysis
Hierarchy
u21.ca is the parent of mail.u21.ca.
IP Addresses
u21.ca points to two IPs: 13.248.169.48 and 76.223.54.146.
Other host names including www.taide.org, mx.lqgv.com, agus.net, dakku.com and memorablemarketing.com share IP numbers with u21.ca.
Name Servers
u21.ca's delegation uses two name servers, ns3.afternic.com and ns4.afternic.com.
u21.ca shares the same name server setup as other domains, for example dev-null.2alpha.com, 33wt.com, mx2.showgen.com, hfge.com and cubetherapy.com.
u21.ca at least partially shares name servers with other domains, including opzs.com, ezglider.com, pegatec.com, santafecleaning.com and uhjm.com.
These name servers are often used together with verification-bclr8ozfjcs2prxuhhhetc.ns101.verify.hn.
Host names with a single IP:
ns3.afternic.com points to 97.74.98.65.
ns4.afternic.com points to 173.201.66.65.