opencourseware.online - robtex.com
opencourseware.online
| DNSSEC | ⚠️ Not signed | ||||||
| A | 157.90.33.73🇩🇪 Hetzner157.90.0.0/16 HETZNER-DC | ||||||
| PTR | old-psh4.1push.io | ||||||
| A | 157.90.33.74🇩🇪 Hetzner157.90.0.0/16 HETZNER-DC | ||||||
| NS | ns1.park-my-domain.net ⭐ | ||||||
| A | 46.224.16.22🇮🇷 Hetzner46.224.0.0/15 HETZNER-DC | ||||||
| PTR | ns1.park-my-domain.net | ||||||
| NS | ns2.park-my-domain.net | ||||||
| A | 65.108.243.18🇫🇮 Hetzner65.108.0.0/16 HETZNER-DC | ||||||
| PTR | static.18.243.108.65.clients.your-server.de | ||||||
| SOA | ns1.park-my-domain.nethostmaster@opencourseware.online 2026-04-05 #27 | ||||||
online
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns01.trs-dns.com ⭐ | ||||||
| NS | ns.trs-dns.com | ||||||
| NS | ns01.trs-dns.net | ||||||
| NS | ns10.trs-dns.info | ||||||
| NS | ns10.trs-dns.org | ||||||
| SOA | ns.trs-dns.comtrs-ops@tucows.com serial=1776587315 | ||||||
Same first word
opencourseware.net |
opencourseware.eu |
opencourseware.com |
opencourseware.co.uk |
opencourseware.de |
opencourseware.me |
opencourseware.online |
opencourseware.org |
Similar names
DNS History
8 records (4 active, 4 former)
○NSdns1.namecheaphosting.com2019-01-04 → 2021-10-25 · 4 obs
● 2021-10-25 15:37:50
○ 2026-04-09 10:48:50
○ 2026-04-19 08:59:54
○NSdns2.namecheaphosting.com2019-01-04 → 2021-10-25 · 4 obs
● 2021-10-25 15:37:50
○ 2026-04-09 10:48:50
○ 2026-04-19 08:59:54
●NSns1.park-my-domain.net2026-04-09 → 2026-04-19 · 3 obs
● 2026-04-09 10:48:50
● 2026-04-19 08:59:54
●NSns2.park-my-domain.net2026-04-09 → 2026-04-19 · 3 obs
● 2026-04-09 10:48:50
● 2026-04-19 08:59:54
○MXmail.opencourseware.online2019-01-04 → 2021-10-25 · 4 obs
● 2021-10-25 15:37:50
○ 2026-04-09 10:48:50
○ 2026-04-19 08:59:54
●A157.90.33.732026-04-09 → 2026-04-19 · 3 obs
● 2026-04-09 10:48:50
● 2026-04-19 08:59:54
●A157.90.33.742026-04-09 → 2026-04-19 · 3 obs
● 2026-04-09 10:48:50
● 2026-04-19 08:59:54
○A198.54.120.1512019-01-04 → 2021-10-25 · 4 obs
● 2021-10-25 15:37:50
○ 2026-04-09 10:48:50
○ 2026-04-19 08:59:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| online | ns10.trs-dns.info, ns01.trs-dns.net, ns01.trs-dns.com, ns10.trs-dns.org | 8 records |
| opencourseware.online | ns1.park-my-domain.net, ns2.park-my-domain.net | - |
✅ Authoritative Response
Server:46.224.16.22
NS records: ns1.park-my-domain.net, ns2.park-my-domain.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for opencourseware.online (unsigned zone)
⏱️ Timing
Total: 979ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 157.90.33.74, 157.90.33.73 |
| NS | 2 | ns2.park-my-domain.net, ns1.park-my-domain.net |
| SOA | 1 | ns1.park-my-domain.net hostmaster.openco |
📌 Glue Records Collected
Total: 8
Out-of-bailiwick: 8 (ns10.trs-dns.info, ns10.trs-dns.info, ns01.trs-dns.net...)
Analysis
IP Addresses
opencourseware.online points to two IPs: 157.90.33.73 and 157.90.33.74.
Other host names, for instance lordfilmmac.online, gamechoban.hayday.mobi, jqb.wujt.hostingsiteforfree.com, vavada-cazino.info and wx9xku.info share IP numbers with opencourseware.online.
Name Servers
Two name servers ns1.park-my-domain.net and ns2.park-my-domain.net are delegated to opencourseware.online.
opencourseware.online uses the same name server configuration as other domains, such as mature(0x787878).top, 123series.watch, playfree.site, bento4dmain.com and deutsch.plus.
Host names with a single IP address:
ns1.park-my-domain.net points to 46.224.16.22
ns2.park-my-domain.net points to 65.108.243.18