studentbook.ca - robtex.com
studentbook.ca
| DNSSEC | ⚠️ Not signed | ||||||
| NS | pdns85.ultradns.biz ⚠️ Not in zone NS records | ||||||
| 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.com ⚠️ Not in zone NS records | ||||||
| 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.net ⚠️ Not in zone NS records | ||||||
| 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 ⚠️ Not in zone NS records | ||||||
| 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 | ||||||
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=2604242030 | ||||||
Same first word
studentbook.ch |
studentbook.com.tw |
studentbook.co.uk |
studentbook.co |
studentbook.eu |
studentbook.it |
studentbook.de |
studentbook.hu |
studentbook.ca |
studentbook.com |
DNS History
6 records (4 active, 2 former)
●NSpdns85.ultradns.biz2015-06-19 → 2026-04-24 · 2 obs
● 2026-04-24 21:25:20
●NSpdns85.ultradns.com2015-06-19 → 2026-04-24 · 2 obs
● 2026-04-24 21:25:20
●NSpdns85.ultradns.net2015-06-19 → 2026-04-24 · 2 obs
● 2026-04-24 21:25:20
●NSpdns85.ultradns.org2015-06-19 → 2026-04-24 · 2 obs
● 2026-04-24 21:25:20
○A192.243.83.302015-06-19 → 2017-04-11 · 4 obs
● 2017-04-11 06:08:08
○ 2026-04-22 11:09:30
○ 2026-04-24 21:25:20
○A192.243.93.452015-06-19 → 2017-04-11 · 4 obs
● 2017-04-11 06:08:08
○ 2026-04-22 11:09:30
○ 2026-04-24 21:25:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ca | c.ca-servers.ca, d.ca-servers.ca, j.ca-servers.ca, any.ca-servers.ca | - |
| studentbook.ca | pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.net, pdns85.ultradns.org | - |
✅ Authoritative Response
Server:156.154.66.85
NS records: pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.net, pdns85.ultradns.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for studentbook.ca (unsigned zone)
⏱️ Timing
Total: 765ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
Analysis
Name Servers
studentbook.ca is delegated to four name servers: pdns85.ultradns.biz, pdns85.ultradns.com, pdns85.ultradns.net and pdns85.ultradns.org.
studentbook.ca at least partially shares name servers with other domains, for instance mhrmathsaskatchewan.com, philasddirectinstruction.com, acuityuat.com, ldacatalog.com and startingout.com.
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.