`opensiddur.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:4a5c^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:c911^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.74.92^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.201.17^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`leah.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a81^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leah.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c081^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`leah.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2081^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`leah.ns.cloudflare.com`
		A	108.162.192.129^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leah.ns.cloudflare.com`
		A	172.64.32.129^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leah.ns.cloudflare.com`
		A	173.245.58.129^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leah.ns.cloudflare.com`
NS	`mike.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c3f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mike.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c33f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`mike.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:233f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`mike.ns.cloudflare.com`
		A	108.162.195.63^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mike.ns.cloudflare.com`
		A	162.159.44.63^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mike.ns.cloudflare.com`
		A	172.64.35.63^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mike.ns.cloudflare.com`
MX	`_dc-mx.9bda77a4bc56.opensiddur.org` ⭐
		A	162.244.93.16^{🇺🇸 AS965162.244.93.0/24 Namecrane}
			PTR	`lv-shared05.cpanelplatform.com`
TXT	`google-site-verification=IZPcTDtSYAN1wD8PKBxcBSkfuv2yJbQudvU6nYOgxq8`
TXT	`v=spf1 include:zcsend.net include:_spf.google.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.74.92, 172.67.201.17
		IPv6	2606:4700:3034::6815:4a5c, 2606:4700:3035::ac43:c911
SOA	`leah.ns.cloudflare.com`dns@cloudflare.com serial=2397876460

`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=1771291736

rank #396718 globally
rank #30767 in the tld
WOT: SAFE (61/100)
📈 Tranco rank: #731,701

Previously MX for

opensiddur.org

Subdomains

www.opensiddur.org

Same first word

opensiddur.org

opensiddur.com

Similar names

dopersduin.nl

soundpride.com

DNS History

20 records (7 active, 13 former)

●NSleah.ns.cloudflare.com2026-02-18 → 2026-03-01 · 3 obs

○ 2017-01-01 02:11:44
● 2026-02-18 16:18:06
● 2026-03-01 20:34:00

●NSmike.ns.cloudflare.com2026-02-18 → 2026-03-01 · 3 obs

○ 2017-01-01 02:11:44
● 2026-02-18 16:18:06
● 2026-03-01 20:34:00

○NSns1.datarealm.com2015-06-24 → 2016-04-27 · 4 obs

● 2015-06-24 20:06:12
● 2016-04-27 05:25:52
○ 2017-01-01 02:11:44
○ 2026-03-01 20:34:00

○NSns2.datarealm.com2015-06-24 → 2016-04-27 · 4 obs

● 2015-06-24 20:06:12
● 2016-04-27 05:25:52
○ 2017-01-01 02:11:44
○ 2026-03-01 20:34:00

○NSns3.datarealm.com2015-06-24 → 2016-04-27 · 4 obs

● 2015-06-24 20:06:12
● 2016-04-27 05:25:52
○ 2017-01-01 02:11:44
○ 2026-03-01 20:34:00

○NSns33.datarealm.com2017-01-01 → 2017-01-01 · 4 obs

○ 2016-04-27 05:25:52
● 2017-01-01 02:11:44
○ 2026-02-18 16:18:06
○ 2026-03-01 20:34:00

○NSns35.datarealm.com2017-01-01 → 2017-01-01 · 4 obs

○ 2016-04-27 05:25:52
● 2017-01-01 02:11:44
○ 2026-02-18 16:18:06
○ 2026-03-01 20:34:00

●MX_dc-mx.9bda77a4bc56.opensiddur.org2026-02-18 → 2026-03-01 · 3 obs

○ 2017-01-01 02:11:44
● 2026-02-18 16:18:06
● 2026-03-01 20:34:00

○MXmail.datarealm.com2015-06-24 → 2016-04-27 · 4 obs

● 2015-06-24 20:06:12
● 2016-04-27 05:25:52
○ 2017-01-01 02:11:44
○ 2026-03-01 20:34:00

○MXopensiddur.org2017-01-01 → 2017-01-01 · 4 obs

○ 2016-04-27 05:25:52
● 2017-01-01 02:11:44
○ 2026-02-18 16:18:06
○ 2026-03-01 20:34:00

●A104.21.74.922026-02-25 → 2026-03-01 · 3 obs

○ 2026-02-18 16:18:06
● 2026-02-25 09:51:24
● 2026-03-01 20:34:00

●A172.67.201.172026-02-25 → 2026-03-01 · 3 obs

○ 2026-02-18 16:18:06
● 2026-02-25 09:51:24
● 2026-03-01 20:34:00

○A188.114.96.02026-02-18 → 2026-02-18 · 4 obs

○ 2017-01-01 02:11:44
● 2026-02-18 16:18:06
○ 2026-02-25 09:51:24
○ 2026-03-01 20:34:00

○A188.114.97.02026-02-18 → 2026-02-18 · 4 obs

○ 2017-01-01 02:11:44
● 2026-02-18 16:18:06
○ 2026-02-25 09:51:24
○ 2026-03-01 20:34:00

●A2606:4700:3034::6815:4a5c2026-02-25 → 2026-03-01 · 3 obs

○ 2026-02-18 16:18:06
● 2026-02-25 09:51:24
● 2026-03-01 20:34:00

●A2606:4700:3035::ac43:c9112026-02-25 → 2026-03-01 · 3 obs

○ 2026-02-18 16:18:06
● 2026-02-25 09:51:24
● 2026-03-01 20:34:00

○A2a06:98c1:3120::2026-02-18 → 2026-02-18 · 4 obs

○ 2017-01-01 02:11:44
● 2026-02-18 16:18:06
○ 2026-02-25 09:51:24
○ 2026-03-01 20:34:00

○A2a06:98c1:3121::2026-02-18 → 2026-02-18 · 4 obs

○ 2017-01-01 02:11:44
● 2026-02-18 16:18:06
○ 2026-02-25 09:51:24
○ 2026-03-01 20:34:00

○A65.23.141.1782015-06-24 → 2016-04-27 · 4 obs

● 2015-06-24 20:06:12
● 2016-04-27 05:25:52
○ 2017-01-01 02:11:44
○ 2026-03-01 20:34:00

○A67.209.236.32017-01-01 → 2017-01-01 · 4 obs

○ 2016-04-27 05:25:52
● 2017-01-01 02:11:44
○ 2026-02-18 16:18:06
○ 2026-03-01 20:34:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org	-
opensiddur.org	leah.ns.cloudflare.com, mike.ns.cloudflare.com	-

✅ Authoritative Response

Server: 172.64.32.129

NS records: leah.ns.cloudflare.com, mike.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for opensiddur.org (unsigned zone)

⏱️ Timing

Total: 309ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.74.92, 172.67.201.17`
AAAA	2	`2606:4700:3034::6815:4a5c, 2606:4700:3035::ac43:c911`
NS	2	`leah.ns.cloudflare.com, mike.ns.cloudflare.com`
MX	1	`_dc-mx.9bda77a4bc56.opensiddur.org (pri:`
TXT	2	`google-site-verification=IZPcTDtSYAN1wD8, v=spf1 include:zcsend.net include:_spf.g`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`leah.ns.cloudflare.com dns.cloudflare.co`

Analysis

Hierarchy

The parent of www.opensiddur.org is opensiddur.org.

IP Addresses

opensiddur.org maps to four IP numbers: 2606:4700:3034::6815:4a5c, 2606:4700:3035::ac43:c911, 104.21.74.92 and 172.67.201.17.

other host names include bq1.cc, bdrischeck.com, mail.chanroblesbar.com.ph, hjcsa.com and traveltalk.co.nz; they share IP numbers with opensiddur.org.

Name Servers

Two name servers leah.ns.cloudflare.com and mike.ns.cloudflare.com handle the delegation for opensiddur.org.

opensiddur.org shares the same name server setup as other domains, for instance gntxt.com, 49us.com, tongjutang.com, fzxsw.com and dh73.com.

opensiddur.org at least partially shares name servers with other domains, for instance 5.0.8.8.3.4.c.a.0.0.0.0.0.0.0.0.0.0.0.0.5.3.0.3.0.0.7.4.6.0.6.2.ip6.arpa, reklamowka.net.pl, totalwararena.asia, aytekintank.com and cpeng.cn.

These name servers are commonly used alongside laura.ns.cloudflare.com, treasure.ns.cloudflare.com and micah.ns.cloudflare.com.

Six IP addresses per host:

leah.ns.cloudflare.com points to 2606:4700:50::adf5:3a81, 2803:f800:50::6ca2:c081, 2a06:98c1:50::ac40:2081, 108.162.192.129, 172.64.32.129 and 173.245.58.129; mike.ns.cloudflare.com points to 2606:4700:58::a29f:2c3f, 2803:f800:50::6ca2:c33f, 2a06:98c1:50::ac40:233f, 108.162.195.63, 162.159.44.63 and 172.64.35.63

Mail Servers

opensiddur.org is handled by a single mail server, _dc-mx.9bda77a4bc56.opensiddur.org.

The host name _dc-mx.9bda77a4bc56.opensiddur.org points to IP 162.244.93.16.

opensiddur.org - robtex.com

opensiddur.org

org

Previously MX for

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`opensiddur.org`

`org`