istudentedition.ca - robtex.com
istudentedition.ca
| DNSSEC | ⚠️ Not signed | ||||||
| A | 192.243.85.36🇺🇸 F5192.243.85.0/24 hosted | ||||||
| NS | pdns85.ultradns.com ⭐ | ||||||
| A | 2001:502:f3ff::79🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar | ||||||
| PTR | pdns85.ultradns.com | ||||||
| A | 156.154.64.85🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar | ||||||
| PTR | pdns85.ultradns.com | ||||||
| NS | pdns85.ultradns.biz | ||||||
| A | 2610:a1:1015::79🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar | ||||||
| PTR | pdns85.ultradns.biz | ||||||
| A | 156.154.66.85🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar | ||||||
| PTR | pdns85.ultradns.biz | ||||||
| NS | pdns85.ultradns.net | ||||||
| A | 2610:a1:1014::79🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar | ||||||
| PTR | pdns85.ultradns.net | ||||||
| A | 156.154.65.85🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar | ||||||
| PTR | pdns85.ultradns.net | ||||||
| NS | pdns85.ultradns.org | ||||||
| A | 2001:502:4612::79🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar | ||||||
| PTR | pdns85.ultradns.org | ||||||
| A | 156.154.67.85🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar | ||||||
| PTR | pdns85.ultradns.org | ||||||
| TXT | v=spf1 mx -all | ||||||
| SOA | pdns85.ultradns.comhostmaster@mheducation.com 2014-12-04 #17 | ||||||
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=2604242300 | ||||||
Same first word
istudentedition.com |
istudentedition.ca |
DNS History
8 records (5 active, 3 former)
●NSpdns85.ultradns.biz2015-07-20 → 2026-04-24 · 2 obs
● 2026-04-24 23:56:14
●NSpdns85.ultradns.com2015-07-20 → 2026-04-24 · 2 obs
● 2026-04-24 23:56:14
●NSpdns85.ultradns.net2015-07-20 → 2026-04-24 · 2 obs
● 2026-04-24 23:56:14
●NSpdns85.ultradns.org2015-07-20 → 2026-04-24 · 2 obs
● 2026-04-24 23:56:14
○A192.243.83.302015-07-20 → 2017-04-07 · 4 obs
● 2017-04-07 23:52:48
○ 2020-02-17 17:06:00
○ 2026-04-24 23:56:14
●A192.243.85.362026-04-22 → 2026-04-24 · 3 obs
● 2026-04-22 15:02:50
● 2026-04-24 23:56:14
○A192.243.93.452015-07-20 → 2017-04-07 · 4 obs
● 2017-04-07 23:52:48
○ 2020-02-17 17:06:00
○ 2026-04-24 23:56:14
○A192.243.94.1882020-02-17 → 2020-02-17 · 4 obs
● 2020-02-17 17:06:00
○ 2026-04-22 15:02:50
○ 2026-04-24 23:56:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ca | c.ca-servers.ca, d.ca-servers.ca, j.ca-servers.ca, any.ca-servers.ca | - |
| istudentedition.ca | pdns85.ultradns.net, pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.org | - |
✅ Authoritative Response
Server:156.154.65.85
NS records: pdns85.ultradns.net, pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for istudentedition.ca (unsigned zone)
⏱️ Timing
Total: 516ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 192.243.85.36 |
| NS | 4 | pdns85.ultradns.biz, pdns85.ultradns.com... |
| TXT | 1 | v=spf1 mx -all |
| SOA | 1 | pdns85.ultradns.com hostmaster.mheducati |
Analysis
IP Addresses
istudentedition.ca points to an IP address: 192.243.85.36.
other host names include istudymis.com, istudybusinessmath.com, connecteconomics.ca, istudymis.ca and istudycalculus.ca; they share IP numbers with istudentedition.ca.
Name Servers
istudentedition.ca delegates to four name servers: pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.net and pdns85.ultradns.org.
istudentedition.ca at least partially shares name servers with other domains, for instance sonoauthor.com, harrisonsonhand.net, jobber-marketing.com, huntmello.com and mheducation.net.
Host names with two IP numbers: pdns85.ultradns.biz points to 2610:a1:1015::79 and 156.154.66.85; pdns85.ultradns.com points to 2001:502:f3ff::79 and 156.154.64.85; pdns85.ultradns.net points to 2610:a1:1014::79 and 156.154.65.85; pdns85.ultradns.org points to 2001:502:4612::79 and 156.154.67.85.