ostutor.ir - robtex.com
ostutor.ir
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.webramz.com ⚠️ Not in zone NS records | ||||||
| A | 94.182.172.203🇮🇷 RASANA94.182.172.0/24 SHATEL Network Route | ||||||
| PTR | sht.203.172.182.94.euhosted.com | ||||||
| A | 145.239.187.199🇫🇷 OVH145.239.0.0/16 | ||||||
| PTR | dns-fr1.rackset.com | ||||||
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=2603281630 | ||||||
Previously MX for
ostutor.ir |
Same first word
Similar names
DNS History
5 records (1 active, 4 former)
●NSns1.webramz.com2026-03-26 → 2026-03-28 · 3 obs
○ 2018-08-04 20:18:50
● 2026-03-26 16:35:34
● 2026-03-28 13:32:46
● 2026-03-26 16:35:34
● 2026-03-28 13:32:46
○NSns14.upweb.ir2018-08-04 → 2018-08-04 · 3 obs
● 2018-08-04 20:18:50
○ 2026-03-26 16:35:34
○ 2026-03-28 13:32:46
○ 2026-03-26 16:35:34
○ 2026-03-28 13:32:46
○NSns15.upweb.ir2018-08-04 → 2018-08-04 · 3 obs
● 2018-08-04 20:18:50
○ 2026-03-26 16:35:34
○ 2026-03-28 13:32:46
○ 2026-03-26 16:35:34
○ 2026-03-28 13:32:46
○MXostutor.ir2018-08-04 → 2018-08-04 · 3 obs
● 2018-08-04 20:18:50
○ 2026-03-26 16:35:34
○ 2026-03-28 13:32:46
○ 2026-03-26 16:35:34
○ 2026-03-28 13:32:46
○A176.9.137.392018-08-04 → 2018-08-04 · 3 obs
● 2018-08-04 20:18:50
○ 2026-03-26 16:35:34
○ 2026-03-28 13:32:46
○ 2026-03-26 16:35:34
○ 2026-03-28 13:32:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ir | a.nic.ir, c.nic.ir, b.nic.ir, d.nic.ir | 8 records |
| ostutor.ir | ns1.webramz.com | - |
✅ Authoritative Response
Server:145.239.187.199
NS records: ns1.webramz.com
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
Validation error at ir: Error: DNS query timeout: 194.225.70.83 for DNSKEY ir
⏱️ Timing
Total: 4273ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 8
In-bailiwick: 8 (d.nic.ir, c.nic.ir, b.nic.ir...)
Analysis
Name Servers
ostutor.ir is delegated to a single name server, ns1.webramz.com.
ostutor.ir partially shares name servers with other domains; examples include drleilafard.com, didab.ir, pishgamankala.com, mmdicsaham.ir and idreams.ir.
These name servers are commonly used with ns2.webramz.com, ns1.webramz.net and ns2.webramz.net.
Host ns1.webramz.com resolves to two IPs: 94.182.172.203 and 145.239.187.199.