readinggroups.org - dns.ninja

`readinggroups.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3036::ac43:9419^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:377a^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.55.122^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.148.25^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`miki.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3aca^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`miki.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0ca^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`miki.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20ca^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`miki.ns.cloudflare.com`
		A	108.162.192.202^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`miki.ns.cloudflare.com`
		A	172.64.32.202^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`miki.ns.cloudflare.com`
		A	173.245.58.202^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`miki.ns.cloudflare.com`
NS	`sullivan.ns.cloudflare.com`
		A	2606:4700:58::a29f:2ca1^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sullivan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3a1^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sullivan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23a1^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sullivan.ns.cloudflare.com`
		A	108.162.195.161^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sullivan.ns.cloudflare.com`
		A	162.159.44.161^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sullivan.ns.cloudflare.com`
		A	172.64.35.161^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sullivan.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.55.122, 172.67.148.25
		IPv6 hints	2606:4700:3036::ac43:9419, 2606:4700:3037::6815:377a
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=137, name=cloudflare-ech.com
SOA	`miki.ns.cloudflare.com`dns@cloudflare.com serial=2406810611

`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=1785097667

Same first word

readinggroups.net

readinggroups.com

readinggroups.co.uk

readinggroups.com.au

readinggroups.org

DNS History

22 records (6 active, 16 former)

●NSmiki.ns.cloudflare.com2026-02-18 → 2026-07-26 · 3 obs

○ 2017-04-23 23:17:00
● 2026-02-18 10:46:20
● 2026-07-26 20:58:48

○NSns1.memset.com2015-06-28 → 2017-04-23 · 4 obs

● 2015-06-28 12:27:50
● 2017-04-23 23:17:00
○ 2026-02-18 10:46:20
○ 2026-07-26 20:58:48

○NSns2.memset.com2015-06-28 → 2017-04-23 · 4 obs

● 2015-06-28 12:27:50
● 2017-04-23 23:17:00
○ 2026-02-18 10:46:20
○ 2026-07-26 20:58:48

○NSns3.memset.com2015-06-28 → 2017-04-23 · 4 obs

● 2015-06-28 12:27:50
● 2017-04-23 23:17:00
○ 2026-02-18 10:46:20
○ 2026-07-26 20:58:48

●NSsullivan.ns.cloudflare.com2026-02-18 → 2026-07-26 · 3 obs

○ 2017-04-23 23:17:00
● 2026-02-18 10:46:20
● 2026-07-26 20:58:48

●A104.21.55.1222026-02-18 → 2026-07-26 · 24 obs

○ 2017-04-23 23:17:00
● 2026-02-18 10:46:20
○ 2026-02-20 03:06:42
○ 2026-02-22 13:01:30
● 2026-02-24 07:45:48
○ 2026-02-26 11:57:36
○ 2026-03-10 02:22:30
● 2026-03-11 06:00:14
○ 2026-03-12 08:12:32
○ 2026-04-02 03:03:34
● 2026-04-02 11:52:20
○ 2026-04-03 02:53:58
○ 2026-04-05 12:31:54
● 2026-04-06 14:57:22
○ 2026-04-08 11:34:22
● 2026-04-08 12:26:50
● 2026-04-13 07:35:18
○ 2026-04-13 10:13:14
○ 2026-04-30 04:51:34
● 2026-04-30 23:19:24
● 2026-06-14 00:18:02
○ 2026-06-16 22:22:38
● 2026-07-05 02:28:16
● 2026-07-26 20:58:48

●A172.67.148.252026-02-18 → 2026-07-26 · 24 obs

○A188.114.96.02026-02-20 → 2026-04-30 · 20 obs

○ 2026-02-18 10:46:20
● 2026-02-20 03:06:42
● 2026-02-22 13:01:30
○ 2026-02-24 07:45:48
● 2026-02-26 11:57:36
● 2026-03-10 02:22:30
○ 2026-03-11 06:00:14
● 2026-03-12 08:12:32
● 2026-04-02 03:03:34
○ 2026-04-02 11:52:20
● 2026-04-03 02:53:58
● 2026-04-05 12:31:54
○ 2026-04-06 14:57:22
● 2026-04-08 11:34:22
○ 2026-04-08 12:26:50
○ 2026-04-13 07:35:18
● 2026-04-13 10:13:14
● 2026-04-30 04:51:34
○ 2026-04-30 23:19:24
○ 2026-07-26 20:58:48

○A188.114.96.42026-06-16 → 2026-06-16 · 5 obs

○ 2026-02-18 10:46:20
○ 2026-06-14 00:18:02
● 2026-06-16 22:22:38
○ 2026-07-05 02:28:16
○ 2026-07-26 20:58:48

○A188.114.97.02026-02-20 → 2026-04-30 · 20 obs

○A188.114.97.42026-06-16 → 2026-06-16 · 5 obs

○ 2026-02-18 10:46:20
○ 2026-06-14 00:18:02
● 2026-06-16 22:22:38
○ 2026-07-05 02:28:16
○ 2026-07-26 20:58:48

○A2606:4700:3034::ac43:94192026-02-18 → 2026-07-05 · 31 obs

○ 2017-04-23 23:17:00
● 2026-02-18 10:46:20
○ 2026-02-20 03:06:42
○ 2026-02-22 13:01:30
● 2026-02-24 07:45:48
○ 2026-02-26 11:57:36
○ 2026-03-10 02:22:30
● 2026-03-11 06:00:14
○ 2026-03-12 08:12:32
● 2026-03-15 23:26:32
○ 2026-03-18 02:49:18
○ 2026-04-02 03:03:34
● 2026-04-02 11:52:20
○ 2026-04-03 02:53:58
○ 2026-04-05 12:31:54
● 2026-04-06 14:57:22
○ 2026-04-08 11:34:22
● 2026-04-08 12:26:50
● 2026-04-13 07:35:18
○ 2026-04-13 10:13:14
○ 2026-04-14 10:12:04
● 2026-04-15 10:26:00
● 2026-04-16 10:37:48
○ 2026-04-17 10:05:10
○ 2026-04-30 04:51:34
● 2026-04-30 23:19:24
● 2026-06-14 00:18:02
○ 2026-06-16 22:22:38
● 2026-07-05 02:28:16
○ 2026-07-12 18:41:34
○ 2026-07-26 20:58:48

○A2606:4700:3035::6815:377a2026-02-18 → 2026-07-05 · 31 obs

○ 2017-04-23 23:17:00
● 2026-02-18 10:46:20
○ 2026-02-20 03:06:42
○ 2026-02-22 13:01:30
● 2026-02-24 07:45:48
○ 2026-02-26 11:57:36
○ 2026-03-10 02:22:30
● 2026-03-11 06:00:14
○ 2026-03-12 08:12:32
● 2026-03-15 23:26:32
○ 2026-03-18 02:49:18
○ 2026-04-02 03:03:34
● 2026-04-02 11:52:20
○ 2026-04-03 02:53:58
○ 2026-04-05 12:31:54
● 2026-04-06 14:57:22
○ 2026-04-08 11:34:22
● 2026-04-08 12:26:50
● 2026-04-13 07:35:18
○ 2026-04-13 10:13:14
○ 2026-04-14 10:12:04
● 2026-04-15 10:26:00
● 2026-04-16 10:37:48
○ 2026-04-17 10:05:10
○ 2026-04-30 04:51:34
● 2026-04-30 23:19:24
● 2026-06-14 00:18:02
○ 2026-06-16 22:22:38
● 2026-07-05 02:28:16
○ 2026-07-12 18:41:34
○ 2026-07-26 20:58:48

●A2606:4700:3036::ac43:94192026-07-12 → 2026-07-26 · 3 obs

○ 2026-07-05 02:28:16
● 2026-07-12 18:41:34
● 2026-07-26 20:58:48

●A2606:4700:3037::6815:377a2026-07-12 → 2026-07-26 · 3 obs

○ 2026-07-05 02:28:16
● 2026-07-12 18:41:34
● 2026-07-26 20:58:48

○A2a06:98c1:3120::2026-02-20 → 2026-06-16 · 32 obs

○ 2026-02-18 10:46:20
● 2026-02-20 03:06:42
● 2026-02-21 02:55:40
○ 2026-02-22 09:42:32
● 2026-02-22 13:01:30
○ 2026-02-24 07:45:48
○ 2026-02-26 11:57:36
● 2026-02-26 13:04:44
● 2026-03-10 02:22:30
○ 2026-03-11 06:00:14
● 2026-03-12 08:12:32
○ 2026-03-15 23:26:32
● 2026-03-18 02:49:18
● 2026-04-02 03:03:34
○ 2026-04-02 11:52:20
● 2026-04-03 02:53:58
● 2026-04-05 12:31:54
○ 2026-04-06 14:57:22
● 2026-04-08 11:34:22
○ 2026-04-08 12:26:50
○ 2026-04-13 07:35:18
● 2026-04-13 10:13:14
● 2026-04-14 10:12:04
○ 2026-04-15 10:26:00
○ 2026-04-16 10:37:48
● 2026-04-17 10:05:10
● 2026-04-30 04:51:34
○ 2026-04-30 23:19:24
○ 2026-06-14 00:18:02
● 2026-06-16 22:22:38
○ 2026-07-05 02:28:16
○ 2026-07-26 20:58:48

○A2a06:98c1:3120::42026-02-22 → 2026-02-26 · 8 obs

○ 2026-02-18 10:46:20
○ 2026-02-21 02:55:40
● 2026-02-22 09:42:32
○ 2026-02-22 13:01:30
○ 2026-02-24 07:45:48
● 2026-02-26 11:57:36
○ 2026-02-26 13:04:44
○ 2026-07-26 20:58:48

○A2a06:98c1:3121::2026-02-20 → 2026-06-16 · 32 obs

○A2a06:98c1:3121::42026-02-22 → 2026-02-26 · 8 obs

○ 2026-02-18 10:46:20
○ 2026-02-21 02:55:40
● 2026-02-22 09:42:32
○ 2026-02-22 13:01:30
○ 2026-02-24 07:45:48
● 2026-02-26 11:57:36
○ 2026-02-26 13:04:44
○ 2026-07-26 20:58:48

○A31.25.184.772015-06-28 → 2016-09-16 · 4 obs

● 2015-06-28 12:27:50
● 2016-09-16 05:42:22
○ 2017-04-23 23:17:00
○ 2026-07-26 20:58:48

○A46.137.91.142017-04-23 → 2017-04-23 · 4 obs

○ 2016-09-16 05:42:22
● 2017-04-23 23:17:00
○ 2026-02-18 10:46:20
○ 2026-07-26 20:58:48

○CNAMEtra-rgfe.herokuapp.com2017-04-23 → 2017-04-23 · 3 obs

● 2017-04-23 23:17:00
○ 2026-02-18 10:46:20
○ 2026-07-26 20:58:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
readinggroups.org	sullivan.ns.cloudflare.com, miki.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.192.202

NS records: sullivan.ns.cloudflare.com, miki.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for readinggroups.org (unsigned zone)

⏱️ Timing

Total: 590ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.148.25, 104.21.55.122`
AAAA	2	`2606:4700:3037::6815:377a, 2606:4700:3036::ac43:9419`
NS	2	`miki.ns.cloudflare.com, sullivan.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`miki.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

readinggroups.org directs to four IP numbers, which are 104.21.55.122, 172.67.148.25, 2606:4700:3036::ac43:9419 and 2606:4700:3037::6815:377a.

cloud.derbergs.com, extension.intecuniguajira.edu.co, fjardlang-huvudskar.se and two other host names share IP numbers with readinggroups.org.

Name Servers

readinggroups.org uses two name servers for its delegation: miki.ns.cloudflare.com and sullivan.ns.cloudflare.com.

readinggroups.org uses the same name servers as several other domains — among them kattong.com, cgnpnjtd.me, bedzzle.com and two more.

There is at least partial name server overlap between readinggroups.org and other domains — taschengeld(0x736578).com, gamesadshopper.com, zrobto.online and two more among them.

It is common to find these name servers alongside the name servers austin.ns.cloudflare.com, dahlia.ns.cloudflare.com, kurt.ns.cloudflare.com and two others.

Hostnames that resolve to 6 IP addresses:

Hostname miki.ns.cloudflare.com directs to 108.162.192.202, 172.64.32.202 and 173.245.58.202 along with 3 other IP addresses.

Hostname sullivan.ns.cloudflare.com directs to 108.162.195.161, 162.159.44.161 and 172.64.35.161 along with 3 other IP addresses.