railstutorial.org - dns.ninja

`railstutorial.org`

DNSSEC	⚠️ Not signed
A	2606:4700:20::681a:80b^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::681a:90b^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::ac43:46ce^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.8.11^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.9.11^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.70.206^{🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`dan.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b6c^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c16c^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`dan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:216c^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`dan.ns.cloudflare.com`
		A	108.162.193.108^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dan.ns.cloudflare.com`
		A	172.64.33.108^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dan.ns.cloudflare.com`
		A	173.245.59.108^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dan.ns.cloudflare.com`
NS	`dana.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a69^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dana.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c069^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`dana.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2069^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`dana.ns.cloudflare.com`
		A	108.162.192.105^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dana.ns.cloudflare.com`
		A	172.64.32.105^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dana.ns.cloudflare.com`
		A	173.245.58.105^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dana.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c1d::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`ww-in-f27.1e100.net`
		A	172.253.122.26^{🇺🇸 Google172.253.122.0/24}
			PTR	`bh-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽²⁰⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽²⁰⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`aspmx2.googlemail.com`⁽³⁰⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`aspmx3.googlemail.com`⁽³⁰⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`aspmx4.googlemail.com`⁽³⁰⁾
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`aspmx5.googlemail.com`⁽³⁰⁾
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`google-site-verification=UN5HDw45LU2G_ILwlavsq_eJDZPztrxpNAWNQOGG-q8`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.26.8.11, 104.26.9.11, 172.67.70.206
		IPv6 hints	2606:4700:20::681a:80b, 2606:4700:20::681a:90b, 2606:4700:20::ac43:46ce
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=235, name=cloudflare-ech.com
SOA	`dan.ns.cloudflare.com`dns@cloudflare.com serial=2403886119

`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.info`hostmaster@donuts.email serial=1781487140

rank #133666 globally
rank #10977 in the tld
WOT: SAFE (94/100)
📈 Tranco rank: #501,370

Subdomains

ruby.railstutorial.org

www.railstutorial.org

Same first word

railstutorial.ru

railstutorial.org

railstutorial.jp

DNS History

29 records (15 active, 14 former)

●NSdan.ns.cloudflare.com2015-08-02 → 2026-06-15 · 2 obs

● 2015-08-02 01:53:28
● 2026-06-15 02:00:20

●NSdana.ns.cloudflare.com2015-08-02 → 2026-06-15 · 2 obs

● 2015-08-02 01:53:28
● 2026-06-15 02:00:20

●MXalt1.aspmx.l.google.com2015-08-02 → 2026-06-15 · 2 obs

● 2015-08-02 01:53:28
● 2026-06-15 02:00:20

●MXalt2.aspmx.l.google.com2015-08-02 → 2026-06-15 · 2 obs

● 2015-08-02 01:53:28
● 2026-06-15 02:00:20

●MXaspmx.l.google.com2015-08-02 → 2026-06-15 · 2 obs

● 2015-08-02 01:53:28
● 2026-06-15 02:00:20

●MXaspmx2.googlemail.com2015-08-02 → 2026-06-15 · 2 obs

● 2015-08-02 01:53:28
● 2026-06-15 02:00:20

●MXaspmx3.googlemail.com2015-08-02 → 2026-06-15 · 2 obs

● 2015-08-02 01:53:28
● 2026-06-15 02:00:20

●MXaspmx4.googlemail.com2015-08-02 → 2026-06-15 · 2 obs

● 2015-08-02 01:53:28
● 2026-06-15 02:00:20

●MXaspmx5.googlemail.com2015-08-02 → 2026-06-15 · 2 obs

● 2015-08-02 01:53:28
● 2026-06-15 02:00:20

○A104.25.168.342017-02-16 → 2017-02-16 · 4 obs

○ 2016-12-18 11:07:16
● 2017-02-16 00:20:12
○ 2026-03-28 12:56:08
○ 2026-06-15 02:00:20

○A104.25.169.342017-02-16 → 2017-02-16 · 4 obs

○ 2016-12-18 11:07:16
● 2017-02-16 00:20:12
○ 2026-03-28 12:56:08
○ 2026-06-15 02:00:20

○A104.25.238.72015-11-02 → 2016-12-18 · 5 obs

○ 2015-10-20 01:46:24
● 2015-11-02 07:13:54
● 2016-12-18 11:07:16
○ 2017-02-16 00:20:12
○ 2026-06-15 02:00:20

○A104.25.239.72015-11-02 → 2016-12-18 · 5 obs

○ 2015-10-20 01:46:24
● 2015-11-02 07:13:54
● 2016-12-18 11:07:16
○ 2017-02-16 00:20:12
○ 2026-06-15 02:00:20

●A104.26.8.112026-03-28 → 2026-06-15 · 10 obs

○ 2017-02-16 00:20:12
● 2026-03-28 12:56:08
● 2026-04-19 13:12:48
○ 2026-04-20 14:07:12
● 2026-05-03 06:00:00
● 2026-05-19 13:11:40
○ 2026-05-23 22:50:46
○ 2026-05-28 02:46:26
● 2026-06-01 07:07:48
● 2026-06-15 02:00:20

●A104.26.9.112026-03-28 → 2026-06-15 · 10 obs

○A108.162.201.792015-08-02 → 2015-10-20 · 4 obs

● 2015-08-02 01:53:28
● 2015-10-20 01:46:24
○ 2015-11-02 07:13:54
○ 2026-06-15 02:00:20

○A108.162.202.792015-08-02 → 2015-10-20 · 4 obs

● 2015-08-02 01:53:28
● 2015-10-20 01:46:24
○ 2015-11-02 07:13:54
○ 2026-06-15 02:00:20

●A172.67.70.2062026-03-28 → 2026-06-15 · 10 obs

○A188.114.96.02026-04-20 → 2026-05-28 · 9 obs

○ 2026-03-28 12:56:08
○ 2026-04-19 13:12:48
● 2026-04-20 14:07:12
○ 2026-05-03 06:00:00
○ 2026-05-19 13:11:40
● 2026-05-23 22:50:46
● 2026-05-28 02:46:26
○ 2026-06-01 07:07:48
○ 2026-06-15 02:00:20

○A188.114.97.02026-04-20 → 2026-05-28 · 9 obs

○A2400:cb00:2048:1::6819:a8222017-02-16 → 2017-02-16 · 4 obs

○ 2016-12-18 11:07:16
● 2017-02-16 00:20:12
○ 2026-03-28 12:56:08
○ 2026-06-15 02:00:20

○A2400:cb00:2048:1::6819:a9222017-02-16 → 2017-02-16 · 4 obs

○ 2016-12-18 11:07:16
● 2017-02-16 00:20:12
○ 2026-03-28 12:56:08
○ 2026-06-15 02:00:20

○A2400:cb00:2048:1::6819:ee072016-12-18 → 2016-12-18 · 4 obs

○ 2015-11-02 07:13:54
● 2016-12-18 11:07:16
○ 2017-02-16 00:20:12
○ 2026-06-15 02:00:20

○A2400:cb00:2048:1::6819:ef072016-12-18 → 2016-12-18 · 4 obs

○ 2015-11-02 07:13:54
● 2016-12-18 11:07:16
○ 2017-02-16 00:20:12
○ 2026-06-15 02:00:20

●A2606:4700:20::681a:80b2026-03-28 → 2026-06-15 · 10 obs

●A2606:4700:20::681a:90b2026-03-28 → 2026-06-15 · 10 obs

●A2606:4700:20::ac43:46ce2026-03-28 → 2026-06-15 · 10 obs

○A2a06:98c1:3120::2026-04-20 → 2026-05-28 · 9 obs

○A2a06:98c1:3121::2026-04-20 → 2026-05-28 · 9 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org	-
railstutorial.org	dan.ns.cloudflare.com, dana.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.105

NS records: dan.ns.cloudflare.com, dana.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for railstutorial.org (unsigned zone)

⏱️ Timing

Total: 771ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`104.26.9.11, 172.67.70.206...`
AAAA	3	`2606:4700:20::ac43:46ce, 2606:4700:20::681a:90b...`
NS	2	`dan.ns.cloudflare.com, dana.ns.cloudflare.com`
MX	7	`aspmx.l.google.com (pri: 10), alt1.aspmx.l.google.com (pri: 20)...`
TXT	1	`google-site-verification=UN5HDw45LU2G_IL`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`dan.ns.cloudflare.com dns.cloudflare.com`

Analysis

Hierarchy

railstutorial.org serves as the parent of ruby.railstutorial.org and www.railstutorial.org.

IP Addresses

railstutorial.org points to 6 IP addresses, including 104.26.8.11, 104.26.9.11 and 172.67.70.206, plus 3 other.

host.ftnnews.com, whipcord.com, evith.com plus two other host names have IP numbers in common with railstutorial.org.

Name Servers

railstutorial.org is delegated to two name servers: dan.ns.cloudflare.com and dana.ns.cloudflare.com.

The name server configuration of railstutorial.org is shared with other domains, for instance ebizprof.com, leicesterleafletdistribution.com, makesitgood.net and two others.

At least some of railstutorial.org's name servers are shared with other domains, for example ahljcp.com, havelocktourism.com, 00bin.cn and two more.

These name servers tend to be deployed in combination with the name servers dave.ns.cloudflare.com and erin.ns.cloudflare.com.

Hosts with 6 IP addresses each:

dan.ns.cloudflare.com resolves to 108.162.193.108, 172.64.33.108, 173.245.59.108 and 3 other IP addresses.

dana.ns.cloudflare.com resolves to 108.162.192.105, 172.64.32.105, 173.245.58.105 and 3 other IP addresses.

Mail Servers

railstutorial.org uses 7 mail servers for delivery: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and 4 other.

At least some of the mail servers used by railstutorial.org are shared with other domains: noahsarps.com, pcinformatica.com.br, grdar.es and two others among them.

These mail servers are often deployed together with aspmx.l.google.com, alt2.aspmx.l.google.com, alt1.aspmx.l.google.com and 3 other mail servers.

Host names pointing to two IP addresses:

aspmx2.googlemail.com points to 108.177.123.27 and 2800:3f0:4003:c0f::1b.

aspmx3.googlemail.com points to 172.253.116.27 and 2a00:1450:400b:c02::1b.

aspmx4.googlemail.com points to 192.178.223.27 and 2a00:1450:4009:c0f::1a.

aspmx5.googlemail.com points to 172.253.157.27 and 2a00:1450:400c:c23::1b.

aspmx.l.google.com points to 172.253.122.26 and 2607:f8b0:4004:c1d::1b.

alt1.aspmx.l.google.com points to 108.177.123.26 and 2800:3f0:4003:c0f::1b.

alt2.aspmx.l.google.com points to 172.253.116.26 and 2a00:1450:400b:c02::1a.

aspmx2.googlemail.com and alt1.aspmx.l.google.com are host names that each point to 2800:3f0:4003:c0f::1b IP addresses.