railscasts.com - robtex.com
railscasts.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=1776546407 | ||||||
rank #52499 in the tld
WOT: SAFE (92/100)
📈 Tranco rank: #417,084
Same first word
railscasts.com |
Similar names
DNS History
13 records (7 active, 6 former)
●NSns-cloud-a1.googledomains.com2026-02-19 → 2026-04-18 · 3 obs
● 2026-02-19 19:25:04
● 2026-04-18 21:15:42
●NSns-cloud-a2.googledomains.com2026-02-19 → 2026-04-18 · 3 obs
● 2026-02-19 19:25:04
● 2026-04-18 21:15:42
●NSns-cloud-a3.googledomains.com2026-02-19 → 2026-04-18 · 3 obs
● 2026-02-19 19:25:04
● 2026-04-18 21:15:42
●NSns-cloud-a4.googledomains.com2026-02-19 → 2026-04-18 · 3 obs
● 2026-02-19 19:25:04
● 2026-04-18 21:15:42
○NSns1.digitalocean.com2015-08-18 → 2017-04-14 · 4 obs
● 2017-04-14 05:25:48
○ 2026-02-19 19:25:04
○ 2026-04-18 21:15:42
○NSns2.digitalocean.com2015-08-18 → 2017-04-14 · 4 obs
● 2017-04-14 05:25:48
○ 2026-02-19 19:25:04
○ 2026-04-18 21:15:42
○NSns3.digitalocean.com2015-08-18 → 2017-04-14 · 4 obs
● 2017-04-14 05:25:48
○ 2026-02-19 19:25:04
○ 2026-04-18 21:15:42
○MXmx1.sub4.homie.mail.dreamhost.com2015-08-18 → 2017-04-14 · 4 obs
● 2017-04-14 05:25:48
○ 2026-02-19 19:25:04
○ 2026-04-18 21:15:42
○MXmx2.sub4.homie.mail.dreamhost.com2015-08-18 → 2017-04-14 · 4 obs
● 2017-04-14 05:25:48
○ 2026-02-19 19:25:04
○ 2026-04-18 21:15:42
●MXmxa.mailgun.org2026-02-19 → 2026-04-18 · 3 obs
● 2026-02-19 19:25:04
● 2026-04-18 21:15:42
●MXmxb.mailgun.org2026-02-19 → 2026-04-18 · 3 obs
● 2026-02-19 19:25:04
● 2026-04-18 21:15:42
●A192.155.88.2472026-02-19 → 2026-04-18 · 3 obs
● 2026-02-19 19:25:04
● 2026-04-18 21:15:42
○A192.81.217.2272015-08-18 → 2017-04-14 · 4 obs
● 2017-04-14 05:25:48
○ 2026-02-19 19:25:04
○ 2026-04-18 21:15:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| railscasts.com | ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com, ns-cloud-a4.googledomains.com | 8 records |
✅ Authoritative Response
Server:216.239.34.106
NS records: ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com, ns-cloud-a4.googledomains.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for railscasts.com (unsigned zone)
⏱️ Timing
Total: 406ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 192.155.88.247 |
| NS | 4 | ns-cloud-a4.googledomains.com, ns-cloud-a3.googledomains.com... |
| MX | 2 | mxa.mailgun.org (pri: 10), mxb.mailgun.org (pri: 10) |
| TXT | 1 | v=spf1 include:mailgun.org ~all |
| SOA | 1 | ns-cloud-a1.googledomains.com cloud-dns- |
📌 Glue Records Collected
Total: 8
Out-of-bailiwick: 8 (ns-cloud-a1.googledomains.com, ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com...)
Analysis
IP Addresses
railscasts.com resolves to a single IP: 192.155.88.247.
Other host names share IP numbers with railscasts.com; for instance li572-247.members.linode.com.
Name Servers
railscasts.com is delegated to four name servers: ns-cloud-a1.googledomains.com, ns-cloud-a2.googledomains.com, ns-cloud-a3.googledomains.com and ns-cloud-a4.googledomains.com.
railscasts.com shares some name servers with other domains, for example teisse.com, glorydaysfinegoods.com, bagofchipsinc.com, aabdalla.com and harveyzheng.com.
Host names with two IP numbers
Two IPs per host:
ns-cloud-a1.googledomains.com points to 2001:4860:4802:32::6a and 216.239.32.106
ns-cloud-a2.googledomains.com points to 2001:4860:4802:34::6a and 216.239.34.106
ns-cloud-a3.googledomains.com points to 2001:4860:4802:36::6a and 216.239.36.106
ns-cloud-a4.googledomains.com points to 2001:4860:4802:38::6a and 216.239.38.106
Mail Servers
railscasts.com is served by two mail servers: mxa.mailgun.org and mxb.mailgun.org.
railscasts.com shares the mail server setup with other domains, for example mail.mcode.com, thehomechampions.com, eltis-online.de, learnive.com and schindelholz.com.
railscasts.com shares some mail servers with other domains, at least partially; for instance rmrdirect.com, dgkochcpa.com, laberinto.in, flitpay.com and osslab.tv.
these mail servers are commonly used alongside aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com.
Host names with a single IP:
mxa.mailgun.org points to 34.160.13.42
mxb.mailgun.org points to 34.149.236.64