`21th.ir`

DNSSEC	⚠️ Not signed
A	185.239.1.100^{🇮🇷 DataCom185.239.1.0/24}
NS	`summit.parspack.net` ⭐
		A	45.32.233.105^{🇳🇱 AS-VULTR45.32.232.0/21 Vultr Assigned Prefix}
		A	45.77.220.172^{🇺🇸 AS-VULTR45.77.216.0/21 Vultr Assigned Prefix}
			PTR	`hosted-by.bitcommand.com`
		A	91.228.186.177^{🇹🇷 BitCommand91.228.186.0/24}
		A	95.179.163.233^{🇩🇪 AS-VULTR95.179.160.0/20 Vultr Assigned Prefix}
			PTR	`hosted-by.bitcommand.com`
		A	195.248.241.85^{🇩🇪 BitCommand195.248.241.0/24 Vultr Customer Route}
		A	217.197.97.160^{🇨🇦 BitCommand217.197.97.0/24}
NS	`wood.parspack.net`
		A	45.32.227.80^{🇺🇸 AS-VULTR45.32.224.0/21 Vultr Assigned Prefix}
			PTR	`hosted-by.bitcommand.com`
		A	46.249.100.201^{🇩🇪 BitCommand46.249.100.0/24}
		A	95.179.163.233^{🇩🇪 AS-VULTR95.179.160.0/20 Vultr Assigned Prefix}
			PTR	`hosted-by.bitcommand.com`
		A	195.248.241.85^{🇩🇪 BitCommand195.248.241.0/24 Vultr Customer Route}
MX	`mail.21th.ir` ⭐
		A	185.239.1.100^{🇮🇷 DataCom185.239.1.0/24}
SOA	`summit.parspack.net`postmaster@21th.ir 2026-07-12 #5

`ir`

	DNSSEC	⚠️ Not signed
	NS	`a.nic.ir` ⚠️ Not in zone NS records
	NS	`b.nic.ir` ⚠️ Not in zone NS records
	NS	`c.nic.ir` ⚠️ Not in zone NS records
	NS	`d.nic.ir` ⚠️ Not in zone NS records

Subdomains

mail.21th.ir

Same first word

21th.pl

21th.cz

21th.ws

21th.co.kr

21th.ir

21th.com

21th.ac

21th.com.ua

Similar names

12th.org

12th.co

12th.shop

th21.com

t21h.xyz

12th.ru

th12.net

1th2.com

ht12.vip

12th.icu

12th.net

ht21.vip

2t1h.fr

12ht.com

12th.eu

12th.in

t21h.com

12th.cl

12th.ai

12th.com.ua

12th.com

12th.day

th21.df.gov.br

th21.net

DNS History

11 records (4 active, 7 former)

○NSns1.bbserver.ir2026-03-31 → 2026-03-31 · 4 obs

○ 2017-09-17 21:39:08
● 2026-03-31 02:53:56
○ 2026-04-26 07:09:00
○ 2026-07-18 21:35:24

○NSns1.blogsky.com2016-04-14 → 2016-04-14 · 3 obs

● 2016-04-14 00:47:12
○ 2017-09-17 21:39:08
○ 2026-07-18 21:35:24

○NSns2.bbserver.ir2026-03-31 → 2026-03-31 · 4 obs

○ 2017-09-17 21:39:08
● 2026-03-31 02:53:56
○ 2026-04-26 07:09:00
○ 2026-07-18 21:35:24

○NSns2.blogsky.com2016-04-14 → 2016-04-14 · 3 obs

● 2016-04-14 00:47:12
○ 2017-09-17 21:39:08
○ 2026-07-18 21:35:24

●NSsummit.parspack.net2026-04-26 → 2026-07-18 · 3 obs

○ 2026-03-31 02:53:56
● 2026-04-26 07:09:00
● 2026-07-18 21:35:24

●NSwood.parspack.net2026-04-26 → 2026-07-18 · 3 obs

○ 2026-03-31 02:53:56
● 2026-04-26 07:09:00
● 2026-07-18 21:35:24

●MXmail.21th.ir2026-04-26 → 2026-07-18 · 2 obs

● 2026-04-26 07:09:00
● 2026-07-18 21:35:24

●A185.239.1.1002026-07-15 → 2026-07-18 · 3 obs

○ 2026-05-26 09:36:18
● 2026-07-15 21:06:00
● 2026-07-18 21:35:24

○A31.3.232.1712016-04-14 → 2016-04-14 · 3 obs

● 2016-04-14 00:47:12
○ 2016-11-28 13:54:18
○ 2026-07-18 21:35:24

○A5.10.249.222026-04-26 → 2026-05-26 · 5 obs

○ 2017-09-17 21:39:08
● 2026-04-26 07:09:00
● 2026-05-26 09:36:18
○ 2026-07-15 21:06:00
○ 2026-07-18 21:35:24

○A5.144.133.1462016-11-28 → 2016-11-28 · 4 obs

○ 2016-04-14 00:47:12
● 2016-11-28 13:54:18
○ 2017-09-17 21:39:08
○ 2026-07-18 21:35:24

🔍 DNS Trace

Analysis

Hierarchy

21th.ir is a parent domain of mail.21th.ir.

IP Addresses

21th.ir resolves to one IP address: 185.239.1.100.

ns1.web4u.ir, mahdesalamat.com, www.testland.org and two other host names share IP numbers with 21th.ir.

Name Servers

21th.ir is delegated to two name servers: summit.parspack.net and wood.parspack.net.

21th.ir has the same name server configuration as other domains like omidts.ir and storeweb.ir.

21th.ir shares at least some of its name servers with other domains, including musinote.ir, iran-tejarat.com, xabdar.ir and two others.

These name servers are frequently seen alongside whaatsapp.ir, 02174391170.pm, flower.parspack.net and 7 other name servers.

Hostnames that resolve to 6 IP addresses:

summit.parspack.net resolves to 45.32.233.105, 45.77.220.172, 91.228.186.177 and 3 other IP addresses.

Hosts that point to four IP numbers:

wood.parspack.net points to 45.32.227.80, 46.249.100.201, 95.179.163.233 and 195.248.241.85.

summit.parspack.net and wood.parspack.net are host names that each point to 95.179.163.233 IP addresses.

summit.parspack.net and wood.parspack.net are host names that each point to 195.248.241.85 IP addresses.

Mail Servers

Mail for 21th.ir is handled by a single mail server, mail.21th.ir.

mail.21th.ir resolves to a single IP number: 185.239.1.100.

21th.ir - robtex.com

21th.ir

ir