`ar51.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3036::ac43:b9e1^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:33cd^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.51.205^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.185.225^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`ollie.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2647^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ollie.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c247^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ollie.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2247^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ollie.ns.cloudflare.com`
		A	108.162.194.71^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ollie.ns.cloudflare.com`
		A	162.159.38.71^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ollie.ns.cloudflare.com`
		A	172.64.34.71^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ollie.ns.cloudflare.com`
NS	`rodney.ns.cloudflare.com`
		A	2606:4700:58::adf5:3be4^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rodney.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1e4^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rodney.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21e4^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rodney.ns.cloudflare.com`
		A	108.162.193.228^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rodney.ns.cloudflare.com`
		A	172.64.33.228^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rodney.ns.cloudflare.com`
		A	173.245.59.228^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rodney.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.51.205, 172.67.185.225
		IPv6 hints	2606:4700:3036::ac43:b9e1, 2606:4700:3037::6815:33cd
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=184, name=cloudflare-ech.com
SOA	`ollie.ns.cloudflare.com`dns@cloudflare.com serial=2397425672

`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=1776079419

Previously MX for

ar51.org

www.ar51.org

Same first word

ar51.cn

ar51.net

ar51.org

ar51.eu

ar51.com

Similar names

ar15.nl

ar15.deals

15ra.com

ar15.cz

ar15.co

51ar.net

ar15.net.co

ra51.com

ar15.ru

ar15.com

ar15.de

51ar.com

ar15.ee

a15r.com

DNS History

17 records (6 active, 11 former)

○NSns1.igotradio.net2015-07-23 → 2017-08-22 · 6 obs

● 2015-07-23 20:45:54
○ 2015-11-17 13:00:36
○ 2016-12-17 16:04:52
● 2017-08-22 12:15:26
○ 2026-03-09 21:51:24
○ 2026-04-13 11:59:12

○NSns1.vertex102.com2015-11-17 → 2016-12-17 · 5 obs

○ 2015-07-23 20:45:54
● 2015-11-17 13:00:36
● 2016-12-17 16:04:52
○ 2017-08-22 12:15:26
○ 2026-04-13 11:59:12

○NSns2.igotradio.net2015-07-23 → 2017-08-22 · 6 obs

● 2015-07-23 20:45:54
○ 2015-11-17 13:00:36
○ 2016-12-17 16:04:52
● 2017-08-22 12:15:26
○ 2026-03-09 21:51:24
○ 2026-04-13 11:59:12

○NSns2.vertex102.com2015-11-17 → 2016-12-17 · 5 obs

○ 2015-07-23 20:45:54
● 2015-11-17 13:00:36
● 2016-12-17 16:04:52
○ 2017-08-22 12:15:26
○ 2026-04-13 11:59:12

●NSollie.ns.cloudflare.com2026-03-09 → 2026-04-13 · 3 obs

○ 2017-08-22 12:15:26
● 2026-03-09 21:51:24
● 2026-04-13 11:59:12

●NSrodney.ns.cloudflare.com2026-03-09 → 2026-04-13 · 3 obs

○ 2017-08-22 12:15:26
● 2026-03-09 21:51:24
● 2026-04-13 11:59:12

○MXar51.org2015-07-23 → 2017-08-22 · 4 obs

● 2015-07-23 20:45:54
● 2017-08-22 12:15:26
○ 2026-03-09 21:51:24
○ 2026-04-13 11:59:12

●A104.21.51.2052026-03-09 → 2026-04-13 · 68 obs

○ 2017-08-22 12:15:26
● 2026-03-09 21:51:24
○ 2026-03-10 03:02:46
○ 2026-03-12 05:36:36
● 2026-03-12 22:32:58
○ 2026-03-12 23:59:32
○ 2026-03-13 02:00:42
● 2026-03-13 04:40:38
○ 2026-03-13 05:26:16
○ 2026-03-13 06:51:26
● 2026-03-13 21:22:50
● 2026-03-14 01:47:18
○ 2026-03-14 03:46:58
○ 2026-03-14 14:02:48
● 2026-03-14 17:09:54
○ 2026-03-14 21:58:26
○ 2026-03-15 02:56:52
● 2026-03-15 05:58:14
● 2026-03-15 18:33:14
○ 2026-03-15 19:53:44
○ 2026-03-16 01:21:22
● 2026-03-17 04:52:02
○ 2026-03-17 14:47:46
● 2026-03-17 17:04:42
● 2026-03-17 18:44:44
○ 2026-03-18 03:01:20
○ 2026-03-19 01:51:10
● 2026-03-19 03:56:34
● 2026-03-19 06:24:38
○ 2026-03-19 12:21:40
○ 2026-03-21 05:51:04
● 2026-03-21 18:03:54
● 2026-03-21 20:43:40
○ 2026-03-22 01:22:00
○ 2026-03-25 01:21:54
● 2026-03-25 10:29:20
● 2026-03-25 11:24:34
○ 2026-03-25 13:36:08
○ 2026-03-27 01:51:46
● 2026-03-27 09:38:58
● 2026-03-28 08:26:22
○ 2026-03-28 12:22:46
○ 2026-03-29 06:04:28
● 2026-03-29 06:37:18
● 2026-03-29 19:31:32
○ 2026-03-29 21:07:56
○ 2026-03-31 12:06:04
● 2026-03-31 23:33:46
● 2026-04-01 00:10:42
○ 2026-04-01 01:08:12
● 2026-04-02 03:42:10
○ 2026-04-02 15:23:12
● 2026-04-02 16:41:48
● 2026-04-02 17:20:38
○ 2026-04-02 23:39:52
○ 2026-04-05 14:10:22
● 2026-04-05 21:35:20
○ 2026-04-05 23:53:24
○ 2026-04-07 00:45:06
● 2026-04-07 12:52:08
○ 2026-04-07 13:46:00
● 2026-04-07 15:09:08
○ 2026-04-07 15:47:24
○ 2026-04-08 01:21:48
● 2026-04-08 18:49:16
○ 2026-04-08 19:57:00
○ 2026-04-13 01:00:20
● 2026-04-13 11:59:12

○A104.250.138.102015-07-23 → 2015-07-23 · 3 obs

● 2015-07-23 20:45:54
○ 2015-11-17 13:00:36
○ 2026-04-13 11:59:12

○A104.250.143.182015-11-17 → 2017-08-22 · 5 obs

○ 2015-07-23 20:45:54
● 2015-11-17 13:00:36
● 2017-08-22 12:15:26
○ 2026-03-09 21:51:24
○ 2026-04-13 11:59:12

●A172.67.185.2252026-03-09 → 2026-04-13 · 68 obs

○A188.114.96.02026-03-10 → 2026-04-13 · 67 obs

○ 2026-03-09 21:51:24
● 2026-03-10 03:02:46
● 2026-03-12 05:36:36
○ 2026-03-12 22:32:58
● 2026-03-12 23:59:32
● 2026-03-13 02:00:42
○ 2026-03-13 04:40:38
● 2026-03-13 05:26:16
● 2026-03-13 06:51:26
○ 2026-03-13 21:22:50
○ 2026-03-14 01:47:18
● 2026-03-14 03:46:58
● 2026-03-14 14:02:48
○ 2026-03-14 17:09:54
● 2026-03-14 21:58:26
● 2026-03-15 02:56:52
○ 2026-03-15 05:58:14
○ 2026-03-15 18:33:14
● 2026-03-15 19:53:44
● 2026-03-16 01:21:22
○ 2026-03-17 04:52:02
● 2026-03-17 14:47:46
○ 2026-03-17 17:04:42
○ 2026-03-17 18:44:44
● 2026-03-18 03:01:20
● 2026-03-19 01:51:10
○ 2026-03-19 03:56:34
○ 2026-03-19 06:24:38
● 2026-03-19 12:21:40
● 2026-03-21 05:51:04
○ 2026-03-21 18:03:54
○ 2026-03-21 20:43:40
● 2026-03-22 01:22:00
● 2026-03-25 01:21:54
○ 2026-03-25 10:29:20
○ 2026-03-25 11:24:34
● 2026-03-25 13:36:08
● 2026-03-27 01:51:46
○ 2026-03-27 09:38:58
○ 2026-03-28 08:26:22
● 2026-03-28 12:22:46
● 2026-03-29 06:04:28
○ 2026-03-29 06:37:18
○ 2026-03-29 19:31:32
● 2026-03-29 21:07:56
● 2026-03-31 12:06:04
○ 2026-03-31 23:33:46
○ 2026-04-01 00:10:42
● 2026-04-01 01:08:12
○ 2026-04-02 03:42:10
● 2026-04-02 15:23:12
○ 2026-04-02 16:41:48
○ 2026-04-02 17:20:38
● 2026-04-02 23:39:52
● 2026-04-05 14:10:22
○ 2026-04-05 21:35:20
● 2026-04-05 23:53:24
● 2026-04-07 00:45:06
○ 2026-04-07 12:52:08
● 2026-04-07 13:46:00
○ 2026-04-07 15:09:08
● 2026-04-07 15:47:24
● 2026-04-08 01:21:48
○ 2026-04-08 18:49:16
● 2026-04-08 19:57:00
● 2026-04-13 01:00:20
○ 2026-04-13 11:59:12

○A188.114.97.02026-03-10 → 2026-04-13 · 67 obs

●A2606:4700:3036::ac43:b9e12026-03-09 → 2026-04-13 · 84 obs

○ 2017-08-22 12:15:26
● 2026-03-09 21:51:24
○ 2026-03-10 03:02:46
○ 2026-03-12 05:36:36
● 2026-03-12 22:32:58
○ 2026-03-12 23:59:32
● 2026-03-13 02:00:42
● 2026-03-13 04:40:38
○ 2026-03-13 05:26:16
○ 2026-03-13 06:51:26
● 2026-03-13 21:22:50
● 2026-03-14 01:47:18
○ 2026-03-14 03:46:58
○ 2026-03-14 14:02:48
● 2026-03-14 17:09:54
○ 2026-03-14 21:58:26
○ 2026-03-15 02:56:52
● 2026-03-15 05:58:14
○ 2026-03-15 08:25:14
● 2026-03-15 18:33:14
○ 2026-03-15 19:53:44
○ 2026-03-16 01:21:22
● 2026-03-17 04:52:02
○ 2026-03-17 14:47:46
● 2026-03-17 17:04:42
● 2026-03-17 18:44:44
○ 2026-03-18 03:01:20
○ 2026-03-19 01:51:10
● 2026-03-19 03:56:34
● 2026-03-19 06:24:38
○ 2026-03-19 12:21:40
○ 2026-03-21 05:51:04
● 2026-03-21 18:03:54
● 2026-03-21 20:43:40
○ 2026-03-22 01:22:00
○ 2026-03-23 02:50:44
● 2026-03-23 03:54:38
● 2026-03-23 14:05:08
○ 2026-03-24 02:44:22
○ 2026-03-25 01:21:54
● 2026-03-25 10:29:20
● 2026-03-25 11:24:34
○ 2026-03-25 13:36:08
● 2026-03-26 03:41:28
○ 2026-03-26 04:12:24
○ 2026-03-27 01:51:46
● 2026-03-27 09:38:58
○ 2026-03-27 10:10:28
○ 2026-03-28 12:22:46
● 2026-03-29 06:04:28
○ 2026-03-29 06:37:18
● 2026-03-29 19:31:32
○ 2026-03-29 21:07:56
○ 2026-03-31 12:06:04
● 2026-03-31 23:33:46
○ 2026-04-01 00:10:42
○ 2026-04-02 15:23:12
● 2026-04-02 16:41:48
● 2026-04-02 17:20:38
○ 2026-04-02 23:39:52
● 2026-04-03 01:46:54
○ 2026-04-03 02:23:04
○ 2026-04-05 14:10:22
● 2026-04-05 21:35:20
● 2026-04-05 23:53:24
○ 2026-04-06 00:23:40
● 2026-04-06 19:15:58
○ 2026-04-06 23:35:28
○ 2026-04-07 00:45:06
● 2026-04-07 12:52:08
○ 2026-04-07 13:46:00
● 2026-04-07 15:09:08
○ 2026-04-07 15:47:24
○ 2026-04-08 01:21:48
● 2026-04-08 18:49:16
○ 2026-04-08 19:57:00
○ 2026-04-10 00:26:20
● 2026-04-11 02:15:42
○ 2026-04-11 02:52:30
○ 2026-04-11 03:37:22
● 2026-04-11 08:51:24
○ 2026-04-11 09:25:40
○ 2026-04-13 01:00:20
● 2026-04-13 11:59:12

●A2606:4700:3037::6815:33cd2026-03-09 → 2026-04-13 · 84 obs

○A2a06:98c1:3120::2026-03-10 → 2026-04-13 · 83 obs

○ 2026-03-09 21:51:24
● 2026-03-10 03:02:46
● 2026-03-12 05:36:36
○ 2026-03-12 22:32:58
● 2026-03-12 23:59:32
○ 2026-03-13 02:00:42
○ 2026-03-13 04:40:38
● 2026-03-13 05:26:16
● 2026-03-13 06:51:26
○ 2026-03-13 21:22:50
○ 2026-03-14 01:47:18
● 2026-03-14 03:46:58
● 2026-03-14 14:02:48
○ 2026-03-14 17:09:54
● 2026-03-14 21:58:26
● 2026-03-15 02:56:52
○ 2026-03-15 05:58:14
● 2026-03-15 08:25:14
○ 2026-03-15 18:33:14
● 2026-03-15 19:53:44
● 2026-03-16 01:21:22
○ 2026-03-17 04:52:02
● 2026-03-17 14:47:46
○ 2026-03-17 17:04:42
○ 2026-03-17 18:44:44
● 2026-03-18 03:01:20
● 2026-03-19 01:51:10
○ 2026-03-19 03:56:34
○ 2026-03-19 06:24:38
● 2026-03-19 12:21:40
● 2026-03-21 05:51:04
○ 2026-03-21 18:03:54
○ 2026-03-21 20:43:40
● 2026-03-22 01:22:00
● 2026-03-23 02:50:44
○ 2026-03-23 03:54:38
○ 2026-03-23 14:05:08
● 2026-03-24 02:44:22
● 2026-03-25 01:21:54
○ 2026-03-25 10:29:20
○ 2026-03-25 11:24:34
● 2026-03-25 13:36:08
○ 2026-03-26 03:41:28
● 2026-03-26 04:12:24
● 2026-03-27 01:51:46
○ 2026-03-27 09:38:58
● 2026-03-27 10:10:28
● 2026-03-28 12:22:46
○ 2026-03-29 06:04:28
● 2026-03-29 06:37:18
○ 2026-03-29 19:31:32
● 2026-03-29 21:07:56
● 2026-03-31 12:06:04
○ 2026-03-31 23:33:46
● 2026-04-01 00:10:42
● 2026-04-02 15:23:12
○ 2026-04-02 16:41:48
○ 2026-04-02 17:20:38
● 2026-04-02 23:39:52
○ 2026-04-03 01:46:54
● 2026-04-03 02:23:04
● 2026-04-05 14:10:22
○ 2026-04-05 21:35:20
○ 2026-04-05 23:53:24
● 2026-04-06 00:23:40
○ 2026-04-06 19:15:58
● 2026-04-06 23:35:28
● 2026-04-07 00:45:06
○ 2026-04-07 12:52:08
● 2026-04-07 13:46:00
○ 2026-04-07 15:09:08
● 2026-04-07 15:47:24
● 2026-04-08 01:21:48
○ 2026-04-08 18:49:16
● 2026-04-08 19:57:00
● 2026-04-10 00:26:20
○ 2026-04-11 02:15:42
● 2026-04-11 02:52:30
● 2026-04-11 03:37:22
○ 2026-04-11 08:51:24
● 2026-04-11 09:25:40
● 2026-04-13 01:00:20
○ 2026-04-13 11:59:12

○A2a06:98c1:3121::2026-03-10 → 2026-04-13 · 83 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, b0.org.afilias-nst.org, d0.org.afilias-nst.org	-
ar51.org	rodney.ns.cloudflare.com, ollie.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.193.228

NS records: rodney.ns.cloudflare.com, ollie.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ar51.org (unsigned zone)

⏱️ Timing

Total: 671ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.185.225, 104.21.51.205`
AAAA	2	`2606:4700:3036::ac43:b9e1, 2606:4700:3037::6815:33cd`
NS	2	`ollie.ns.cloudflare.com, rodney.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`ollie.ns.cloudflare.com dns.cloudflare.c`

Analysis

IP Addresses

ar51.org points to four IP numbers: 2606:4700:3036::ac43:b9e1, 2606:4700:3037::6815:33cd, 104.21.51.205 and 172.67.185.225.

Other host names, for instance musik-produktiv.fr, uf6s.com.cdn.cloudflare.net, ohanapi.org, cutfilelabs.com and www.odddnet.com share IP numbers with ar51.org.

Name Servers

ar51.org's delegation is to two name servers ollie.ns.cloudflare.com and rodney.ns.cloudflare.com.

ar51.org shares the same name server configuration as other domains, such as fngzweb.com, cygnux.org, inspiringhairstyles.com, bigwinsslots.net and dsyn4u.com.

ar51.org at least partially shares its name servers with other domains, for instance k8x.ru, angleradventures.com, swinguru.co.il, rota.tips and zenithedgelogic.pics.

These name servers are commonly used with toby.ns.cloudflare.com, kinsley.ns.cloudflare.com and barbara.ns.cloudflare.com.

Host names with six IP numbers:

ollie.ns.cloudflare.com points to: 2606:4700:50::a29f:2647, 2803:f800:50::6ca2:c247, 2a06:98c1:50::ac40:2247, 108.162.194.71, 162.159.38.71 and 172.64.34.71.

rodney.ns.cloudflare.com points to: 2606:4700:58::adf5:3be4, 2803:f800:50::6ca2:c1e4, 2a06:98c1:50::ac40:21e4, 108.162.193.228, 172.64.33.228 and 173.245.59.228.

ar51.org - robtex.com

ar51.org

org