`sz.passivecomponent.com`

DNSSEC	⚠️ Not signed
NS	`web.sz.passivecomponent.com` ⭐ ⚠️ Not in parent delegation
		A	60.244.88.1^{🇹🇼 APBT60.244.88.0/24 Asia Pacific Telecom co., Ltd}
MX	`wtcsp04.sz.passivecomponent.com` ⭐
		A	60.250.44.34^{🇹🇼 HiNet60.250.0.0/16}
			PTR	`wtcsp04.passivecomponent.com`
MX	`wtcsp03.sz.passivecomponent.com`⁽¹⁰⁾
		A	59.120.68.166^{🇹🇼 HiNet59.120.0.0/16}
			PTR	`wtcsp03.passivecomponent.com`
TXT	`v=spf1 ip4:59.120.68.169 ip4:59.120.68.174 ip4:59.120.68.166 ip4:60.250.44.34...`
SOA	`web.sz.passivecomponent.com`johnhsieh@sz.passivecomponent.com 2026-04-07 #29

`passivecomponent.com`

	DNSSEC	⚠️ Not signed
	A	59.120.68.163^{🇹🇼 HiNet59.120.0.0/16}
	NS	`web.passivecomponent.com` ⭐
	NS	`ns02.passivecomponent.com`
	MX	`wtcsp03.passivecomponent.com` ⭐
	MX	`wtcsp04.passivecomponent.com`⁽⁵⁾
	TXT	`MS=ms93386791`
	TXT	`duo_sso_verification=V54ap9uKCuOHfXk20A7JoMAPMhe1nhPHTUzcvfvedrgx5oDdLaliyhb3...`
	TXT	`v=spf1 ip4:59.120.68.169 ip4:59.120.68.174 ip4:59.120.68.166 ip4:60.250.44.34...`
	TXT	`Public-CA-domain-verification=7DA18EEEE6462F0E1B0A41315D9F21DC`
	SOA	`web.passivecomponent.com`johnhsieh@passivecomponent.com 2026-04-07 #29

rank #290534 globally
rank #123369 in the tld
📈 Tranco rank: #626,903

Subdomains

wtcsp03.sz.passivecomponent.com

wtcsp04.sz.passivecomponent.com

dns2.sz.passivecomponent.com

web.sz.passivecomponent.com

Same first word

sz.fyi

sz.design

sz.ru

sz.lt

sz.org.cn

sz.org.au

sz.life

sz.city

sz.nl

sz.lv

sz.cz

sz.zj.cn

sz.ws

sz.org

sz.cx

sz.si

sz.su

sz.se

sz.com.tw

sz.de

sz.gov.mk

sz.ch

sz.kz

sz.my

sz.com

sz.edu.cn

sz.hb.cn

sz.pl

sz.com.tr

sz.chat

sz.ms

sz.no

sz.net.cn

sz.ua

sz.mba

sz.nu

sz.adv.br

sz.net

sz.gov.cn

sz.world

sz.js.cn

sz.cl

sz

sz.dk

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DNS History

10 records (3 active, 7 former)

○NS(root)2019-01-20 → 2019-01-20 · 4 obs

○ 2016-12-16 07:19:14
● 2019-01-20 02:53:42
○ 2026-03-19 12:50:30
○ 2026-04-15 15:34:18

○NSdns2.sz.passivecomponent.com2015-08-05 → 2019-01-20 · 6 obs

● 2015-08-05 06:12:42
● 2016-04-13 22:24:48
○ 2016-12-16 07:19:14
● 2019-01-20 02:53:42
○ 2026-03-19 12:50:30
○ 2026-04-15 15:34:18

○NSdns2.sz.passivecomponent.com.sz.passivecomponent.com2015-08-05 → 2016-04-13 · 6 obs

● 2015-08-05 06:12:42
● 2015-12-01 18:27:00
○ 2016-03-03 18:51:32
● 2016-04-13 22:24:48
○ 2016-12-16 07:19:14
○ 2026-04-15 15:34:18

●NSweb.sz.passivecomponent.com2015-10-19 → 2026-04-15 · 7 obs

○ 2015-08-05 06:12:42
● 2015-10-19 14:54:42
○ 2015-12-01 18:27:00
● 2016-03-03 18:51:32
○ 2016-04-13 22:24:48
● 2016-12-16 07:19:14
● 2026-04-15 15:34:18

○NSweb.sz.passivecomponent.com.sz.passivecomponent.com2015-08-05 → 2016-12-16 · 8 obs

● 2015-08-05 06:12:42
○ 2015-10-19 14:54:42
○ 2015-12-01 18:27:00
● 2016-03-03 18:51:32
○ 2016-04-13 22:24:48
● 2016-12-16 07:19:14
○ 2019-01-20 02:53:42
○ 2026-04-15 15:34:18

●MXwtcsp03.sz.passivecomponent.com2019-01-20 → 2026-04-15 · 3 obs

○ 2016-12-16 07:19:14
● 2019-01-20 02:53:42
● 2026-04-15 15:34:18

●MXwtcsp04.sz.passivecomponent.com2019-01-20 → 2026-04-15 · 3 obs

○ 2016-12-16 07:19:14
● 2019-01-20 02:53:42
● 2026-04-15 15:34:18

○MXwtcsp33.sz.passivecomponent.com2015-08-05 → 2016-12-16 · 4 obs

● 2015-08-05 06:12:42
● 2016-12-16 07:19:14
○ 2019-01-20 02:53:42
○ 2026-04-15 15:34:18

○MXwtcsp53.sz.passivecomponent.com2015-08-05 → 2016-12-16 · 4 obs

● 2015-08-05 06:12:42
● 2016-12-16 07:19:14
○ 2019-01-20 02:53:42
○ 2026-04-15 15:34:18

○A218.4.234.112019-01-20 → 2019-01-20 · 3 obs

● 2019-01-20 02:53:42
○ 2026-03-19 12:50:30
○ 2026-04-15 15:34:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
passivecomponent.com	web.passivecomponent.com, ns02.passivecomponent.com	2 records

✅ Authoritative Response

Server:60.244.88.1

NS records: web.passivecomponent.com, ns02.passivecomponent.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for passivecomponent.com (unsigned zone)

⏱️ Timing

Total: 534ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	1	`web.sz.passivecomponent.com`
MX	2	`wtcsp04.sz.passivecomponent.com (pri: 5), wtcsp03.sz.passivecomponent.com (pri: 10`
TXT	1	`v=spf1 ip4:59.120.68.169 ip4:59.120.68.1`
SOA	1	`web.sz.passivecomponent.com johnhsieh.sz`

📌 Glue Records Collected

Total: 2

In-bailiwick: 2 (web.passivecomponent.com, ns02.passivecomponent.com)

Analysis

Hierarchy

sz.passivecomponent.com is a parent of wtcsp03.sz.passivecomponent.com, wtcsp04.sz.passivecomponent.com, dns2.sz.passivecomponent.com and web.sz.passivecomponent.com.

Name Servers

sz.passivecomponent.com is delegated to a single name server, web.sz.passivecomponent.com.

Host name web.sz.passivecomponent.com resolves to IP 60.244.88.1.

Mail Servers

sz.passivecomponent.com is handled by two mail servers: wtcsp03.sz.passivecomponent.com and wtcsp04.sz.passivecomponent.com.

Host names with one IP number:

wtcsp03.sz.passivecomponent.com points to: 59.120.68.166.

wtcsp04.sz.passivecomponent.com points to: 60.250.44.34.

sz.passivecomponent.com - robtex.com