rubycourse.info - dns.ninja
rubycourse.info
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::6815:404c🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3035::ac43:b277🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.64.76Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.178.119🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | dalary.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::a29f:26dc🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dalary.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c2dc🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | dalary.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:22dc🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | dalary.ns.cloudflare.com | ||||||
| A | 108.162.194.220🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dalary.ns.cloudflare.com | ||||||
| A | 162.159.38.220Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dalary.ns.cloudflare.com | ||||||
| A | 172.64.34.220🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dalary.ns.cloudflare.com | ||||||
| NS | noah.ns.cloudflare.com | ||||||
| A | 2606:4700:58::adf5:3b85🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | noah.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c185🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | noah.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2185🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | noah.ns.cloudflare.com | ||||||
| A | 108.162.193.133🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | noah.ns.cloudflare.com | ||||||
| A | 172.64.33.133🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | noah.ns.cloudflare.com | ||||||
| A | 173.245.59.133🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | noah.ns.cloudflare.com | ||||||
| MX | route2.mx.cloudflare.net ⭐ | ||||||
| A | 2606:4700:f5::e🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route2.mx.cloudflare.net | ||||||
| A | 2606:4700:f5::f🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route2.mx.cloudflare.net | ||||||
| A | 2606:4700:f5::10🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route2.mx.cloudflare.net | ||||||
| A | 162.159.205.17Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route2.mx.cloudflare.net | ||||||
| A | 162.159.205.18Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route2.mx.cloudflare.net | ||||||
| A | 162.159.205.19Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route2.mx.cloudflare.net | ||||||
| MX | route1.mx.cloudflare.net(23) | ||||||
| A | 2606:4700:f5::b🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route1.mx.cloudflare.net | ||||||
| A | 2606:4700:f5::c🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route1.mx.cloudflare.net | ||||||
| A | 2606:4700:f5::d🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route1.mx.cloudflare.net | ||||||
| A | 162.159.205.11Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route1.mx.cloudflare.net | ||||||
| A | 162.159.205.12Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route1.mx.cloudflare.net | ||||||
| A | 162.159.205.13Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route1.mx.cloudflare.net | ||||||
| MX | route3.mx.cloudflare.net(66) | ||||||
| A | 2606:4700:f5::11🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route3.mx.cloudflare.net | ||||||
| A | 2606:4700:f5::12🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route3.mx.cloudflare.net | ||||||
| A | 2606:4700:f5::13🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route3.mx.cloudflare.net | ||||||
| A | 162.159.205.23Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route3.mx.cloudflare.net | ||||||
| A | 162.159.205.24Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route3.mx.cloudflare.net | ||||||
| A | 162.159.205.25Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route3.mx.cloudflare.net | ||||||
| TXT | v=spf1 include:_spf.mx.cloudflare.net ~all | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.64.76, 172.67.178.119 | ||||||
| IPv6 hints | 2606:4700:3030::6815:404c, 2606:4700:3035::ac43:b277 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=239, name=cloudflare-ech.com | ||||||
| SOA | dalary.ns.cloudflare.comdns@cloudflare.com serial=2415968540 | ||||||
info
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.info.afilias-nst.info ⭐ | ||||||
| NS | a2.info.afilias-nst.info | ||||||
| NS | b0.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| NS | b2.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| NS | c0.info.afilias-nst.info | ||||||
| NS | d0.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| SOA | a0.info.afilias-nst.infohostmaster@donuts.email serial=1790816324 | ||||||
Same first word
rubycourse.pages.dev |
rubycourse.info |
Similar names
Previous names
Next names
rubycrayon.info |
rubycrimsonmedia.info |
rubycrnaxf.info |
rubycrown.info |
rubycrownn.info |
rubycyanmedia.info |
rubyday.info |
rubydeermedia.info |
rubydev.info |
rubydex.info |
rubydoc.info |
rubydon.info |
DNS History
13 records (9 active, 4 former)
●NSdalary.ns.cloudflare.com2026-09-05 → 2026-10-01 · 2 obs
● 2026-10-01 02:10:34
●NSnoah.ns.cloudflare.com2026-09-05 → 2026-10-01 · 2 obs
● 2026-10-01 02:10:34
●MXroute1.mx.cloudflare.net2026-09-05 → 2026-10-01 · 2 obs
● 2026-10-01 02:10:34
●MXroute2.mx.cloudflare.net2026-09-05 → 2026-10-01 · 2 obs
● 2026-10-01 02:10:34
●MXroute3.mx.cloudflare.net2026-09-05 → 2026-10-01 · 2 obs
● 2026-10-01 02:10:34
●A104.21.64.762026-09-06 → 2026-10-01 · 5 obs
● 2026-09-06 08:47:18
○ 2026-09-18 08:27:18
● 2026-09-30 09:31:38
● 2026-10-01 02:10:34
●A172.67.178.1192026-09-06 → 2026-10-01 · 5 obs
● 2026-09-06 08:47:18
○ 2026-09-18 08:27:18
● 2026-09-30 09:31:38
● 2026-10-01 02:10:34
○A188.114.96.02026-09-05 → 2026-09-18 · 5 obs
○ 2026-09-06 08:47:18
● 2026-09-18 08:27:18
○ 2026-09-30 09:31:38
○ 2026-10-01 02:10:34
○A188.114.97.02026-09-05 → 2026-09-18 · 5 obs
○ 2026-09-06 08:47:18
● 2026-09-18 08:27:18
○ 2026-09-30 09:31:38
○ 2026-10-01 02:10:34
●A2606:4700:3030::6815:404c2026-09-06 → 2026-10-01 · 5 obs
● 2026-09-06 08:47:18
○ 2026-09-18 08:27:18
● 2026-09-30 09:31:38
● 2026-10-01 02:10:34
●A2606:4700:3035::ac43:b2772026-09-06 → 2026-10-01 · 5 obs
● 2026-09-06 08:47:18
○ 2026-09-18 08:27:18
● 2026-09-30 09:31:38
● 2026-10-01 02:10:34
○A2a06:98c1:3120::2026-09-05 → 2026-09-18 · 5 obs
○ 2026-09-06 08:47:18
● 2026-09-18 08:27:18
○ 2026-09-30 09:31:38
○ 2026-10-01 02:10:34
○A2a06:98c1:3121::2026-09-05 → 2026-09-18 · 5 obs
○ 2026-09-06 08:47:18
● 2026-09-18 08:27:18
○ 2026-09-30 09:31:38
○ 2026-10-01 02:10:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| info | b0.info.afilias-nst.org, a0.info.afilias-nst.info, c0.info.afilias-nst.info, b2.info.afilias-nst.org... | 12 records |
| rubycourse.info | dalary.ns.cloudflare.com, noah.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.194.220
NS records: dalary.ns.cloudflare.com, noah.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for rubycourse.info (unsigned zone)
⏱️ Timing
Total: 803ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.64.76, 172.67.178.119 |
| AAAA | 2 | 2606:4700:3035::ac43:b277, 2606:4700:3030::6815:404c |
| NS | 2 | dalary.ns.cloudflare.com, noah.ns.cloudflare.com |
| MX | 3 | route1.mx.cloudflare.net (pri: 23), route2.mx.cloudflare.net (pri: 6)... |
| TXT | 1 | v=spf1 include:_spf.mx.cloudflare.net ~a |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | dalary.ns.cloudflare.com dns.cloudflare. |
📌 Glue Records Collected
Total: 12
In-bailiwick: 6 (a0.info.afilias-nst.info, a0.info.afilias-nst.info, c0.info.afilias-nst.info...)
Out-of-bailiwick: 6 (b0.info.afilias-nst.org, b0.info.afilias-nst.org, b2.info.afilias-nst.org...)
Analysis
IP Addresses
rubycourse.info points to the four IP addresses 104.21.64.76, 172.67.178.119, 2606:4700:3030::6815:404c and 2606:4700:3035::ac43:b277.
Among the host names that share IP numbers with rubycourse.info are ssldd.com, visionai.one, zorotototerbaik5.store and two others.
Name Servers
rubycourse.info has two authoritative name servers — dalary.ns.cloudflare.com and noah.ns.cloudflare.com.
rubycourse.info has the same name server delegation as a number of other domains, such as llboy.pages.dev, n1yb-jfn.workers.dev, thelaunchandlegacyproject.com and two more.
There is at least partial name server overlap between rubycourse.info and other domains — fujiwaraworks.com, design-tabrak189.pages.dev, dpfei.workers.dev and two more among them.
These name servers frequently co-occur with the name servers jermaine.ns.cloudflare.com and rustam.ns.cloudflare.com.
Host names resolving to 6 IP numbers:
dalary.ns.cloudflare.com points to 108.162.194.220, 162.159.38.220, 172.64.34.220 and 3 other IP addresses.
noah.ns.cloudflare.com points to 108.162.193.133, 172.64.33.133, 173.245.59.133 and 3 other IP addresses.
Mail Servers
Incoming mail for rubycourse.info is delivered via three mail servers: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.
rubycourse.info shares at least some of its mail servers with other domains — for example dieta.ai, facal.cc, cardineaud.com and two more.
Host names resolving to 6 IP numbers:
route1.mx.cloudflare.net points to 162.159.205.11, 162.159.205.12, 162.159.205.13 and 3 other IP addresses.
route2.mx.cloudflare.net points to 162.159.205.17, 162.159.205.18, 162.159.205.19 and 3 other IP addresses.
route3.mx.cloudflare.net points to 162.159.205.23, 162.159.205.24, 162.159.205.25 and 3 other IP addresses.