optcongress.com - robtex.com
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optcongress.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 131.153.14.16🇺🇸 ASN-HIGHHO | ||||||
| NS | ns73.worldnic.com ⭐ | ||||||
| A | 162.159.26.27 Cloudflare | ||||||
| PTR | ip-162-159-26-27.defastlink.net | ||||||
| NS | ns74.worldnic.com | ||||||
| A | 162.159.27.78 Cloudflare | ||||||
| PTR | ip-162-159-27-78.defastlink.net | ||||||
| MX | optcongress-com.mail.protection.outlook.com ⭐ | ||||||
| TXT | v=spf1 ip4:8.39.1.0/24 ip4:8.224.216.0/24 ip4:23.249.208.0/20 ip4:23.251.224.... | ||||||
| TXT | _n6wowuxu5i7697cx1l5plp2w707urj2 | ||||||
| TXT | Validity-Domain Verification=hujlsSI14zITBDp7hBNo2bZ9FoI= | ||||||
| TXT | MS=ms86512431 | ||||||
| SOA | NS73.WORLDNIC.comnamehost@WORLDNIC.com serial=125112419 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1771291435 | ||||||
Same first word
optcongress.com |
Similar names
DNS History
5 records (4 active, 1 former)
●NSns73.worldnic.com2017-01-04 → 2026-02-17 · 2 obs
● 2026-02-17 23:01:20
●NSns74.worldnic.com2017-01-04 → 2026-02-17 · 2 obs
● 2026-02-17 23:01:20
●MXoptcongress-com.mail.protection.outlook.com2017-01-04 → 2026-02-17 · 2 obs
● 2026-02-17 23:01:20
●A131.153.14.162026-02-17 → 2026-02-17 · 3 obs
● 2026-02-17 23:01:18
● 2026-02-17 23:01:20
○A205.174.26.1652017-01-04 → 2017-01-04 · 3 obs
○ 2026-02-17 23:01:18
○ 2026-02-17 23:01:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| optcongress.com | ns73.worldnic.com, ns74.worldnic.com | - |
✅ Authoritative Response
Server: 162.159.27.78
NS records: ns73.worldnic.com, ns74.worldnic.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for optcongress.com (unsigned zone)
⏱️ Timing
Total: 82ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 131.153.14.16 |
| NS | 2 | ns73.worldnic.com, ns74.worldnic.com |
| MX | 1 | optcongress-com.mail.protection.outlook. |
| TXT | 4 | MS=ms86512431, _n6wowuxu5i7697cx1l5plp2w707urj2... |
| SOA | 1 | NS73.WORLDNIC.com namehost.WORLDNIC.com |
AI analysis
optcongress.com points to a single IP number: 131.153.14.16.
Other host names, for instance lb.healthtech.com, healthtech.com, clinicalinformaticsnews.com, www.worldpreclinicalcongress.com and executivedecisionmaking.com share IP numbers with optcongress.com.
optcongress.com is delegated to two name servers: ns73.worldnic.com and ns74.worldnic.com.
optcongress.com uses the same name server setup as other domains, for instance mckinleyinc.com, belcap.com, winniewear.com, nrhs1.com and ashkinlaw.info.
Host names with one IP number:
ns73.worldnic.com points to: 162.159.26.27.
ns74.worldnic.com points to: 162.159.27.78.
The mail server for optcongress.com is optcongress-com.mail.protection.outlook.com.