option51.com - robtex.com
option51.com
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=1774656907 | ||||||
Same first word
option51.com |
Similar names
DNS History
7 records (7 active, 0 former)
●NSns-cloud-b1.googledomains.com2026-03-27 → 2026-03-28 · 2 obs
● 2026-03-28 00:30:46
●NSns-cloud-b2.googledomains.com2026-03-27 → 2026-03-28 · 2 obs
● 2026-03-28 00:30:46
●NSns-cloud-b3.googledomains.com2026-03-27 → 2026-03-28 · 2 obs
● 2026-03-28 00:30:46
●NSns-cloud-b4.googledomains.com2026-03-27 → 2026-03-28 · 2 obs
● 2026-03-28 00:30:46
●MXmxa.mailgun.org2026-03-27 → 2026-03-28 · 2 obs
● 2026-03-28 00:30:46
●MXmxb.mailgun.org2026-03-27 → 2026-03-28 · 2 obs
● 2026-03-28 00:30:46
●A199.36.158.1002026-03-27 → 2026-03-28 · 2 obs
● 2026-03-28 00:30:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| option51.com | ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com, ns-cloud-b3.googledomains.com, ns-cloud-b4.googledomains.com | 8 records |
✅ Authoritative Response
Server:216.239.32.107
NS records: ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com, ns-cloud-b3.googledomains.com, ns-cloud-b4.googledomains.com
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 428ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 199.36.158.100 |
| NS | 4 | ns-cloud-b2.googledomains.com, ns-cloud-b3.googledomains.com... |
| MX | 2 | mxb.mailgun.org (pri: 10), mxa.mailgun.org (pri: 10) |
| TXT | 1 | v=spf1 include:mailgun.org ~all |
| SOA | 1 | ns-cloud-b1.googledomains.com cloud-dns- |
📌 Glue Records Collected
Total: 8
Out-of-bailiwick: 8 (ns-cloud-b1.googledomains.com, ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com...)
Analysis
IP Addresses
option51.com resolves to one IP number: 199.36.158.100.
other host names including business-case-appeal4412.firebaseapp.com, kencanatour.com, handle-ads-warning-36134.web.app, fincalostigres.com and royal-college-magazine.web.app share IP numbers with option51.com.
Name Servers
option51.com is delegated to four name servers: ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com, ns-cloud-b3.googledomains.com and ns-cloud-b4.googledomains.com.
option51.com at least partially shares name servers with other domains, for instance musicofthestones.com, danielsbusinesssolutions.com, poged.fr, lukalula.com and allblueeverything.com.
Host names with two IP numbers:
ns-cloud-b1.googledomains.com points to 2001:4860:4802:32::6b and 216.239.32.107; ns-cloud-b2.googledomains.com points to 2001:4860:4802:34::6b and 216.239.34.107; ns-cloud-b3.googledomains.com points to 2001:4860:4802:36::6b and 216.239.36.107; ns-cloud-b4.googledomains.com points to 2001:4860:4802:38::6b and 216.239.38.107.
Mail Servers
Two mail servers handle option51.com: mxa.mailgun.org and mxb.mailgun.org.
option51.com shares the same mail server setup as other domains, for instance shopsleuth.com, yu.mk.ua, emails.mxa.mailgun.org, ldonado.com and resortquestwhistler.com.
option51.com shares some mail servers with other domains, at least partially, for instance rmtcenter.com, bigbadwolfbooks.com, foa-approved.org, embassyofindiayangon.gov.in and bicity.com.
these mail servers are often used together with mail servers aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.
Host names with a single IP:
mxa.mailgun.org points to 34.160.157.95.
mxb.mailgun.org points to 34.160.157.95.
Host names pointing to 34.160.157.95: mxa.mailgun.org and mxb.mailgun.org.