`sef.org.tw`

DNSSEC	⚠️ Not signed
NS	`dns.hinet.net` ⚠️ Not in zone NS records
		A	2001:b000:168::1^{🇹🇼 HiNet2001:b000:100::/40}
			PTR	`dns.hinet.net`
		A	2001:b000:168::2^{🇹🇼 HiNet2001:b000:100::/40}
			PTR	`dns.hinet.net`
		A	168.95.1.1^{🇹🇼 HiNet168.95.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd.}
			PTR	`dns.hinet.net`
		A	168.95.192.1^{🇹🇼 HiNet168.95.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd.}
			PTR	`dns.hinet.net`
			PTR	`hntp1.hinet.net`
NS	`sefweb.sef.org.tw` ⚠️ Not in zone NS records
NS	`sefweb02.sef.org.tw` ⚠️ Not in zone NS records
MX	`c150.sef.org.tw`⁽⁹⁹⁹⁾

`org.tw`

	DNSSEC	⚠️ Not signed
	NS	`a.twnic.net.tw` ⭐ ⚠️ Not in parent delegation
	NS	`anytld.apnic.net` ⚠️ Not in parent delegation
	NS	`b.twnic.net.tw` ⚠️ Not in parent delegation
	NS	`c.twnic.net.tw` ⚠️ Not in parent delegation
	NS	`d.twnic.net.tw` ⚠️ Not in parent delegation
	NS	`e.twnic.net.tw` ⚠️ Not in parent delegation
	NS	`f.twnic.net.tw` ⚠️ Not in parent delegation
	NS	`g.twnic.net.tw` ⚠️ Not in parent delegation
	NS	`h.dns.tw` ⚠️ Not in parent delegation
	NS	`h.twnic.net.tw` ⚠️ Not in parent delegation
	SOA	`a.twnic.net.tw`snw@twnic.net.tw serial=1999640286

rank #531157 globally
rank #1212 in the tld
WOT: SAFE (63/100)
📈 Tranco rank: #939,454
WOT: SAFE (78/100)

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DNS History

4 records (4 active, 0 former)

●NSdns.hinet.net2026-02-17 → 2026-03-27 · 3 obs

○ 2015-08-25 00:59:06
● 2026-02-17 01:19:30
● 2026-03-27 19:31:20

●NSsefweb.sef.org.tw2015-08-25 → 2026-03-27 · 2 obs

● 2015-08-25 00:59:06
● 2026-03-27 19:31:20

●NSsefweb02.sef.org.tw2026-02-17 → 2026-03-27 · 3 obs

○ 2015-08-25 00:59:06
● 2026-02-17 01:19:30
● 2026-03-27 19:31:20

●MXc150.sef.org.tw2015-08-25 → 2026-03-27 · 2 obs

● 2015-08-25 00:59:06
● 2026-03-27 19:31:20

🔍 DNS Trace

Analysis

Name Servers

sef.org.tw is delegated to name servers dns.hinet.net, sefweb02.sef.org.tw and sefweb.sef.org.tw.

sef.org.tw at least partially shares name servers with other domains such as wsecom.com, atp-bio.com, unice.com.tw, vost.com.tw and hunternet.com.tw.

These name servers are often used together with hntp1.hinet.net, dns1.yuding.info, dns.yuding.info, dns.seed.net.tw, vns2.hinet.net, dns.google, nsp1.hinet.net, extdns.greatwall.com.tw, lu.greatwall.com.tw and vm550231160001.

Host names with four IPs:

dns.hinet.net points to 2001:b000:168::1, 2001:b000:168::2, 168.95.1.1 and 168.95.192.1.

Mail Servers

sef.org.tw is handled by a single mail server, c150.sef.org.tw.

sef.org.tw - robtex.com

sef.org.tw

org.tw