bistlearn.ir - robtex.com
bistlearn.ir
| DNSSEC | ⚠️ Not signed | ||||||
| NS | i.ns.arvancdn.ir ⚠️ Not in zone NS records | ||||||
| NS | u.ns.arvancdn.ir ⚠️ Not in zone NS records | ||||||
| A | 185.143.235.253🇮🇷 ARVANCLOUD-CDN-IR185.143.235.0/24 | ||||||
ir
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a.nic.ir ⭐ | ||||||
| NS | b.nic.ir | ||||||
| NS | c.nic.ir | ||||||
| NS | d.nic.ir | ||||||
| SOA | a.nic.irinfo@nic.ir serial=2608022145 | ||||||
Same first word
bistlearn.ir |
Similar names
DNS History
6 records (2 active, 4 former)
●NSi.ns.arvancdn.ir2026-07-11 → 2026-08-02 · 3 obs
● 2026-07-11 00:17:26
● 2026-08-02 19:30:30
○NSns219.mihanwebhost.com2017-05-28 → 2017-05-28 · 3 obs
○ 2026-03-27 07:34:26
○ 2026-08-02 19:30:30
○NSns220.mihanwebhost.com2017-05-28 → 2017-05-28 · 3 obs
○ 2026-03-27 07:34:26
○ 2026-08-02 19:30:30
●NSu.ns.arvancdn.ir2026-07-11 → 2026-08-02 · 3 obs
● 2026-07-11 00:17:26
● 2026-08-02 19:30:30
○MXmail.bistlearn.ir2017-05-28 → 2017-05-28 · 3 obs
○ 2026-03-27 07:34:26
○ 2026-08-02 19:30:30
○A185.94.97.1102017-05-28 → 2017-05-28 · 3 obs
○ 2026-03-27 07:34:26
○ 2026-08-02 19:30:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ir | a.nic.ir, b.nic.ir, c.nic.ir, d.nic.ir | 8 records |
| bistlearn.ir | u.ns.arvancdn.ir, i.ns.arvancdn.ir | - |
✅ Authoritative Response
Server:185.143.232.253
NS records: u.ns.arvancdn.ir, i.ns.arvancdn.ir
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
Validation error at ir: Error: DNS query timeout: 193.189.123.2 for DNSKEY ir
⏱️ Timing
Total: 3476ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 185.143.234.238, 185.143.233.238 |
| NS | 2 | u.ns.arvancdn.ir, i.ns.arvancdn.ir |
| SOA | 1 | i.ns.arvancdn.ir hostmaster.arvancloud.i |
📌 Glue Records Collected
Total: 8
In-bailiwick: 8 (a.nic.ir, b.nic.ir, c.nic.ir...)
Analysis
Name Servers
Two name servers handle the delegation for bistlearn.ir: i.ns.arvancdn.ir and u.ns.arvancdn.ir.
bistlearn.ir shares its name server setup with other domains, including padidehls.ir, soltansafar.com, farakouh.ir and two others.
At least some of bistlearn.ir's name servers are shared with other domains, for example sybt.ir, taktaweb.ir, www.rouydad24.ir and two more.
These name servers tend to co-occur with m.ns.arvancdn.ir, r.ns.arvancdn.ir, j.ns.arvancdn.ir and 7 other name servers in the same DNS delegations.
Host names pointing to a single IP address:
The hostname u.ns.arvancdn.ir resolves to 185.143.235.253.