`osac.com.tw`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:3ea5^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::ac43:8989^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.62.165^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.137.137^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`ara.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a43^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ara.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c043^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ara.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2043^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ara.ns.cloudflare.com`
		A	108.162.192.67^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ara.ns.cloudflare.com`
		A	172.64.32.67^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ara.ns.cloudflare.com`
		A	173.245.58.67^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ara.ns.cloudflare.com`
NS	`bruce.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b4d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bruce.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c14d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`bruce.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:214d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`bruce.ns.cloudflare.com`
		A	108.162.193.77^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bruce.ns.cloudflare.com`
		A	172.64.33.77^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bruce.ns.cloudflare.com`
		A	173.245.59.77^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bruce.ns.cloudflare.com`
MX	`osac-com-tw.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:cc09::^{🇸🇬 Microsoft2a01:111:f000::/36}
			PTR	`mail-sg2pr03cu00500.inbound.protection.outlook.com`
		A	2a01:111:f403:cc1a::8^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-tydpr03cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:cc1f::4^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-os8pr02cu00104.inbound.protection.outlook.com`
		A	52.101.124.117^{🇯🇵 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-tydpr03cu00105.inbound.protection.outlook.com`
		A	52.101.137.0^{🇸🇬 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sg2pr03cu00500.inbound.protection.outlook.com`
		A	52.101.157.80^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-os8pr02cu00100.inbound.protection.outlook.com`
TXT	`MS=ms88645603`
TXT	`google-site-verification=YYR5QrHiABdLHixV69gdeQ8PWUYBDT9EyhW8mNY990g`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.62.165, 172.67.137.137
		IPv6 hints	2606:4700:3031::6815:3ea5, 2606:4700:3031::ac43:8989
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=124, name=cloudflare-ech.com
SOA	`ara.ns.cloudflare.com`dns@cloudflare.com serial=2401356980

`com.tw`

	DNSSEC	⚠️ Not signed
	NS	`a.twnic.net.tw` ⭐
	NS	`anytld.apnic.net`
	NS	`b.twnic.net.tw`
	NS	`c.twnic.net.tw`
	NS	`d.twnic.net.tw`
	NS	`e.twnic.net.tw`
	NS	`f.twnic.net.tw`
	NS	`g.twnic.net.tw`
	NS	`h.dns.tw`
	NS	`h.twnic.net.tw`
	SOA	`a.twnic.net.tw`snw@twnic.net.tw serial=2006345105

WOT: SAFE (58/100)

Subdomains

www.osac.com.tw

Same first word

osac.ph

osac.ca

osac.de

osac.us

osac.in

osac.com

osac.info

osac.gov

osac.org

osac.be

osac.jp

osac.ru

osac.cz

osac.it

osac.aero

osac.net

osac.com.tw

osac.org.cn

osac.eu

osac.ir

Similar names

osca.cn

saoc.ru

asco.com.to

caso.fr

asco.me

soca.com.br

coas.org.ar

asoc.info

caso.co.uk

csao.net

acso.us

saco.biz

asco.com.fj

cosa.fi

asco.com

asco.at

asoc.co.uk

soac.co.jp

scao.su

acos.ru

caso.tv

csoa.org

cosa.co.jp

oacs.info

asco.ch

caos.gmbh

osca.nl

osca.se

caso.co.jp

acso.org

asco.media

cosa.it

acos.ch

osca.kr

soca.ad

cosa.pl

caso.co

acso.com.mx

osca.ro

caos.com.br

saco.cc

osca.us

saco.com.vn

scao.us

asco.vu

scoa.es

soca.rs

aocs.it

saco.info

cosa.cz

caso.ch

acos.ca

csao.org

scao.ca

saco.in

aosc.top

asco.us

saco.com

osca.digital

asoc.es

asco.vn

asco.cz

ocas.dk

oacs.jp

caso.jp

ocsa.on.ca

scoa.net

acos.edu.au

ocsa.it

asco.co

scoa.dk

caso.de.com

acos.space

acso.ua

asco.info

asoc.us

soac.net

soca.ru

caos.in

ocas.us

saco.world

csao.fr

acso.com.br

coas.it

ocas.no

saco.co.uk

asco.org.uk

soac.tv

caso.com.cn

caos.fi

cosa.k12.or.us

oacs.co.uk

cosa.ru

asco.az

osca.su

ocas.ch

asco.net.pl

asoc.net.au

osca.com

asco.pl

cosa.jp

acso.med.br

soca.net

acos.no

oasc.ca

coas.nl

osca.info

acso.kz

caos.de

acso.ir

asco.ca

asco.tv

asco.co.za

soca.com.tw

cosa.bc.ca

cosa.solutions

ocas.be

osca.org.au

caso.com.hk

saco.no

acos.at

DNS History

21 records (7 active, 14 former)

●NSara.ns.cloudflare.com2016-12-03 → 2026-04-24 · 3 obs

○ 2016-07-11 22:44:38
● 2016-12-03 07:29:50
● 2026-04-24 18:44:54

●NSbruce.ns.cloudflare.com2016-12-03 → 2026-04-24 · 3 obs

○ 2016-07-11 22:44:38
● 2016-12-03 07:29:50
● 2026-04-24 18:44:54

○NSns1.ix1000.com2015-10-30 → 2016-07-11 · 4 obs

● 2015-10-30 18:03:34
● 2016-07-11 22:44:38
○ 2016-12-03 07:29:50
○ 2026-04-24 18:44:54

○NSns2.ix1000.com2015-10-30 → 2016-07-11 · 4 obs

● 2015-10-30 18:03:34
● 2016-07-11 22:44:38
○ 2016-12-03 07:29:50
○ 2026-04-24 18:44:54

○MXalt1.aspmx.l.google.com2015-10-30 → 2016-12-03 · 4 obs

● 2015-10-30 18:03:34
● 2016-12-03 07:29:50
○ 2026-03-22 12:05:10
○ 2026-04-24 18:44:54

○MXalt2.aspmx.l.google.com2015-10-30 → 2016-12-03 · 4 obs

● 2015-10-30 18:03:34
● 2016-12-03 07:29:50
○ 2026-03-22 12:05:10
○ 2026-04-24 18:44:54

○MXaspmx.l.google.com2015-10-30 → 2016-07-11 · 4 obs

● 2015-10-30 18:03:34
● 2016-07-11 22:44:38
○ 2016-12-03 07:29:50
○ 2026-04-24 18:44:54

○MXaspmx2.googlemail.com2015-10-30 → 2016-12-03 · 4 obs

● 2015-10-30 18:03:34
● 2016-12-03 07:29:50
○ 2026-03-22 12:05:10
○ 2026-04-24 18:44:54

○MXaspmx3.googlemail.com2015-10-30 → 2016-12-03 · 4 obs

● 2015-10-30 18:03:34
● 2016-12-03 07:29:50
○ 2026-03-22 12:05:10
○ 2026-04-24 18:44:54

○MXaspmx4.googlemail.com2015-10-30 → 2016-12-03 · 4 obs

● 2015-10-30 18:03:34
● 2016-12-03 07:29:50
○ 2026-03-22 12:05:10
○ 2026-04-24 18:44:54

○MXaspmx5.googlemail.com2015-10-30 → 2016-12-03 · 4 obs

● 2015-10-30 18:03:34
● 2016-12-03 07:29:50
○ 2026-03-22 12:05:10
○ 2026-04-24 18:44:54

●MXosac-com-tw.mail.protection.outlook.com2026-03-22 → 2026-04-24 · 3 obs

○ 2016-12-03 07:29:50
● 2026-03-22 12:05:10
● 2026-04-24 18:44:54

●A104.21.62.1652026-03-22 → 2026-04-24 · 3 obs

○ 2016-12-03 07:29:50
● 2026-03-22 12:05:10
● 2026-04-24 18:44:54

○A104.27.142.192016-12-03 → 2016-12-03 · 4 obs

○ 2016-07-11 22:44:38
● 2016-12-03 07:29:50
○ 2026-03-22 12:05:10
○ 2026-04-24 18:44:54

○A104.27.143.192016-12-03 → 2016-12-03 · 4 obs

○ 2016-07-11 22:44:38
● 2016-12-03 07:29:50
○ 2026-03-22 12:05:10
○ 2026-04-24 18:44:54

○A106.184.5.1832015-10-30 → 2016-07-11 · 4 obs

● 2015-10-30 18:03:34
● 2016-07-11 22:44:38
○ 2016-12-03 07:29:50
○ 2026-04-24 18:44:54

●A172.67.137.1372026-03-22 → 2026-04-24 · 3 obs

○ 2016-12-03 07:29:50
● 2026-03-22 12:05:10
● 2026-04-24 18:44:54

○A2400:cb00:2048:1::681b:8e132016-12-03 → 2016-12-03 · 4 obs

○ 2016-07-11 22:44:38
● 2016-12-03 07:29:50
○ 2026-03-22 12:05:10
○ 2026-04-24 18:44:54

○A2400:cb00:2048:1::681b:8f132016-12-03 → 2016-12-03 · 4 obs

○ 2016-07-11 22:44:38
● 2016-12-03 07:29:50
○ 2026-03-22 12:05:10
○ 2026-04-24 18:44:54

●A2606:4700:3031::6815:3ea52026-03-22 → 2026-04-24 · 3 obs

○ 2016-12-03 07:29:50
● 2026-03-22 12:05:10
● 2026-04-24 18:44:54

●A2606:4700:3031::ac43:89892026-03-22 → 2026-04-24 · 3 obs

○ 2016-12-03 07:29:50
● 2026-03-22 12:05:10
● 2026-04-24 18:44:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
tw	a.dns.tw, b.dns.tw, c.dns.tw, d.dns.tw...	-
osac.com.tw	ara.ns.cloudflare.com, bruce.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.67

NS records: ara.ns.cloudflare.com, bruce.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for osac.com.tw (unsigned zone)

⏱️ Timing

Total: 1407ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.137.137, 104.21.62.165`
AAAA	2	`2606:4700:3031::ac43:8989, 2606:4700:3031::6815:3ea5`
NS	2	`ara.ns.cloudflare.com, bruce.ns.cloudflare.com`
MX	1	`osac-com-tw.mail.protection.outlook.com`
TXT	3	`MS=ms88645603, google-site-verification=YYR5QrHiABdLHix...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`ara.ns.cloudflare.com dns.cloudflare.com`

Analysis

Hierarchy

The parent of www.osac.com.tw is osac.com.tw.

IP Addresses

osac.com.tw maps to four IP numbers: 2606:4700:3031::6815:3ea5, 2606:4700:3031::ac43:8989, 104.21.62.165 and 172.67.137.137.

other host names include glasswindowrepair22561.blog-eye.com, infoita.it, media.medi-link.co.il, www.jens.space and lptimes.com; they share IP numbers with osac.com.tw.

Name Servers

Two name servers ara.ns.cloudflare.com and bruce.ns.cloudflare.com handle the delegation for osac.com.tw.

osac.com.tw shares the same name server setup as other domains, for instance gdco.ro, helix.ink, smartbot.co, bsdracing.ca and 9213606.ru.

osac.com.tw at least partially shares name servers with other domains, for instance elvtdseltzer.com, ghumtipasal.com, bravonilexar.com, 521wg.cn and larsen.lol.

These name servers are commonly used alongside cameron.ns.cloudflare.com, isabel.ns.cloudflare.com and sri.ns.cloudflare.com.

Six IP addresses per host:

ara.ns.cloudflare.com points to 2606:4700:50::adf5:3a43, 2803:f800:50::6ca2:c043, 2a06:98c1:50::ac40:2043, 108.162.192.67, 172.64.32.67 and 173.245.58.67; bruce.ns.cloudflare.com points to 2606:4700:58::adf5:3b4d, 2803:f800:50::6ca2:c14d, 2a06:98c1:50::ac40:214d, 108.162.193.77, 172.64.33.77 and 173.245.59.77

Mail Servers

osac.com.tw is handled by a single mail server, osac-com-tw.mail.protection.outlook.com.

The host name osac-com-tw.mail.protection.outlook.com points to six IP numbers: 2a01:111:f403:cc09::, 2a01:111:f403:cc1a::8, 2a01:111:f403:cc1f::4, 52.101.124.117, 52.101.137.0 and 52.101.157.80.

osac.com.tw - robtex.com

osac.com.tw

com.tw

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

`osac.com.tw`

`com.tw`