udemy.courses - robtex.com
udemy.courses
| DNSSEC | ⚠️ Not signed | ||||||
| A | 217.19.248.132🇬🇧 SAFENAMES-AS217.19.248.0/24 Safenames Datacentre | ||||||
| PTR | redirect.idp365.net | ||||||
| NS | dns1.idp365.net ⭐ | ||||||
| A | 2400:cb00:2049:1::a29f:1b83🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street | ||||||
| A | 162.159.27.131Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dns1.idp365.net | ||||||
| NS | dns2.idp365.net | ||||||
| A | 2400:cb00:2049:1::a29f:3003🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street | ||||||
| A | 162.159.48.3Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dns2.idp365.net | ||||||
| NS | dns3.idp365.net | ||||||
| A | 2400:cb00:2049:1::a29f:31fe🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street | ||||||
| A | 162.159.49.254Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dns3.idp365.net | ||||||
| MX | mail.idp365.net ⭐ | ||||||
| A | 217.19.248.131🇬🇧 SAFENAMES-AS217.19.248.0/24 Safenames Datacentre | ||||||
| PTR | redirect1.safenames.com | ||||||
| SOA | dns1.idp365.nethostmaster@idp365.net 2018-03-19 #1 | ||||||
courses
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.nic.courses ⭐ | ||||||
| NS | b.nic.courses | ||||||
| NS | c.nic.courses | ||||||
| NS | x.nic.courses | ||||||
| NS | y.nic.courses | ||||||
| NS | z.nic.courses | ||||||
| SOA | a.nic.coursesadmin@tldns.godaddy serial=1784185328 | ||||||
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSdns1.idp365.net2026-05-26 → 2026-07-16 · 2 obs
● 2026-07-16 07:14:34
●NSdns2.idp365.net2026-05-26 → 2026-07-16 · 2 obs
● 2026-07-16 07:14:34
●NSdns3.idp365.net2026-05-26 → 2026-07-16 · 2 obs
● 2026-07-16 07:14:34
●MXmail.idp365.net2026-05-26 → 2026-07-16 · 2 obs
● 2026-07-16 07:14:34
●A217.19.248.1322026-05-26 → 2026-07-16 · 2 obs
● 2026-07-16 07:14:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| courses | a.nic.courses, b.nic.courses, c.nic.courses, x.nic.courses... | 12 records |
| udemy.courses | dns2.idp365.net, dns3.idp365.net, dns1.idp365.net | - |
✅ Authoritative Response
Server:162.159.48.3
NS records: dns2.idp365.net, dns3.idp365.net, dns1.idp365.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for udemy.courses (unsigned zone)
⏱️ Timing
Total: 485ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 217.19.248.132 |
| NS | 3 | dns1.idp365.net, dns3.idp365.net... |
| MX | 1 | mail.idp365.net (pri: 10) |
| SOA | 1 | dns1.idp365.net hostmaster.idp365.net |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (a.nic.courses, a.nic.courses, b.nic.courses...)
Analysis
IP Addresses
udemy.courses directs to one IP number, which is 217.19.248.132.
Among the host names that share IP numbers with udemy.courses are veniciaframelesscabinetry.com, www.hockeysticks.co.uk, nutritioncalculator.ca and two others.
Name Servers
udemy.courses is delegated to three name servers: dns1.idp365.net, dns2.idp365.net and dns3.idp365.net.
There is at least partial name server overlap between udemy.courses and other domains — multiyorksofas.co.uk, crowe.es, warehouselondon.de and two more among them.
dns1.idp365.net, dns2.idp365.net and dns3.idp365.net each resolve to two IP addresses: dns1.idp365.net resolves to 162.159.27.131 and 2400:cb00:2049:1::a29f:1b83; dns2.idp365.net resolves to 162.159.48.3 and 2400:cb00:2049:1::a29f:3003; dns3.idp365.net resolves to 162.159.49.254 and 2400:cb00:2049:1::a29f:31fe.
Mail Servers
udemy.courses routes its mail through a single mail server, mail.idp365.net.
udemy.courses has the same mail server arrangement as a number of other domains, for example esaturnus.org, dimeprimark.es, thelexiva.com and two more.
mail.idp365.net resolves to a single IP number: 217.19.248.131.