courses2day.org - robtex.com
courses2day.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3033::6815:1833🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3033::ac43:d913🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.24.51Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.217.19🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | martin.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::a29f:2c57🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | martin.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c357🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | martin.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2357🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | martin.ns.cloudflare.com | ||||||
| A | 108.162.195.87🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | martin.ns.cloudflare.com | ||||||
| A | 162.159.44.87Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | martin.ns.cloudflare.com | ||||||
| A | 172.64.35.87🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | martin.ns.cloudflare.com | ||||||
| NS | pam.ns.cloudflare.com | ||||||
| A | 2606:4700:50::adf5:3a8a🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | pam.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c08a🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | pam.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:208a🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | pam.ns.cloudflare.com | ||||||
| A | 108.162.192.138🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | pam.ns.cloudflare.com | ||||||
| A | 172.64.32.138🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | pam.ns.cloudflare.com | ||||||
| A | 173.245.58.138🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | pam.ns.cloudflare.com | ||||||
| MX | mx1.privateemail.com ⭐ | ||||||
| A | 162.255.118.7🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES | ||||||
| PTR | mx1.privateemail.com | ||||||
| MX | mx2.privateemail.com ⭐ | ||||||
| A | 162.255.118.8🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES | ||||||
| PTR | mx2.privateemail.com | ||||||
| TXT | cryptomus=0c3cdcfb | ||||||
| TXT | google-site-verification=Qm0iAsK28asRcBKof4aONncII-1pARBkuMgKHfGZmCs | ||||||
| TXT | v=spf1 include:spf.ipzmarketing.com include:spf.privateemail.com ~all | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.24.51, 172.67.217.19 | ||||||
| IPv6 hints | 2606:4700:3033::6815:1833, 2606:4700:3033::ac43:d913 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=239, name=cloudflare-ech.com | ||||||
| SOA | martin.ns.cloudflare.comdns@cloudflare.com serial=2400713614 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1775961237 | ||||||
Same first word
courses2day.com |
courses2day.org |
DNS History
8 records (8 active, 0 former)
●NSmartin.ns.cloudflare.com2026-03-27 → 2026-04-12 · 2 obs
● 2026-04-12 02:57:32
●NSpam.ns.cloudflare.com2026-03-27 → 2026-04-12 · 2 obs
● 2026-04-12 02:57:32
●MXmx1.privateemail.com2026-03-27 → 2026-04-12 · 2 obs
● 2026-04-12 02:57:32
●MXmx2.privateemail.com2026-03-27 → 2026-04-12 · 2 obs
● 2026-04-12 02:57:32
●A104.21.24.512026-03-27 → 2026-04-12 · 2 obs
● 2026-04-12 02:57:32
●A172.67.217.192026-03-27 → 2026-04-12 · 2 obs
● 2026-04-12 02:57:32
●A2606:4700:3033::6815:18332026-03-27 → 2026-04-12 · 2 obs
● 2026-04-12 02:57:32
●A2606:4700:3033::ac43:d9132026-03-27 → 2026-04-12 · 2 obs
● 2026-04-12 02:57:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| courses2day.org | pam.ns.cloudflare.com, martin.ns.cloudflare.com | - |
✅ Authoritative Response
Server:173.245.58.138
NS records: pam.ns.cloudflare.com, martin.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for courses2day.org (unsigned zone)
⏱️ Timing
Total: 766ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.217.19, 104.21.24.51 |
| AAAA | 2 | 2606:4700:3033::ac43:d913, 2606:4700:3033::6815:1833 |
| NS | 2 | martin.ns.cloudflare.com, pam.ns.cloudflare.com |
| MX | 2 | mx1.privateemail.com (pri: 10), mx2.privateemail.com (pri: 10) |
| TXT | 3 | cryptomus=0c3cdcfb, google-site-verification=Qm0iAsK28asRcBK... |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | martin.ns.cloudflare.com dns.cloudflare. |
Analysis
IP Addresses
courses2day.org points to four IP numbers: 2606:4700:3033::6815:1833, 2606:4700:3033::ac43:d913, 104.21.24.51 and 172.67.217.19.
Other host names, for instance alzsh.com, af88.link, (0x787878)cartoonpic.com, triple8world.com and canantes.com share IP numbers with courses2day.org.
Name Servers
Delegation for courses2day.org rests with two name servers, martin.ns.cloudflare.com and pam.ns.cloudflare.com.
courses2day.org shares the same name server setup as other domains, including choregy.irish, rahat.info, tnt.dance, dadumataslot77.com and hebatkomedi.com.
courses2day.org at least partially shares name servers with other domains, for instance zonaopa89.online, forcasa.com.br, tokyofriedchickenco.com, perfectviral.com and midvalleyendo.com.
these name servers are commonly used with eric.ns.cloudflare.com, alice.ns.cloudflare.com and marissa.ns.cloudflare.com.
Host names with six IP numbers: martin.ns.cloudflare.com points to: 2606:4700:58::a29f:2c57, 2803:f800:50::6ca2:c357, 2a06:98c1:50::ac40:2357, 108.162.195.87, 162.159.44.87 and 172.64.35.87. pam.ns.cloudflare.com points to: 2606:4700:50::adf5:3a8a, 2803:f800:50::6ca2:c08a, 2a06:98c1:50::ac40:208a, 108.162.192.138, 172.64.32.138 and 173.245.58.138.
Mail Servers
courses2day.org is handled by two mail servers: mx1.privateemail.com and mx2.privateemail.com.
courses2day.org uses the same mail server configuration as other domains, such as zzt.ca, renpla.com, regionsland.com, internationalbeerday.com and alnuaimi-office.com.
courses2day.org shares mail servers with other domains at least in part, for instance gourmetcookware.co.uk, topmoroccotravel.com, maze-systems.com, irancell.website and reveel.id.
Host names with one IP number: mx1.privateemail.com points to 162.255.118.7; mx2.privateemail.com points to 162.255.118.8.