`pku.su`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:de3e^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:2e0e^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.46.14^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.222.62^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`gabriella.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2686^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gabriella.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c286^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`gabriella.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2286^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`gabriella.ns.cloudflare.com`
		A	108.162.194.134^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gabriella.ns.cloudflare.com`
		A	162.159.38.134^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gabriella.ns.cloudflare.com`
		A	172.64.34.134^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gabriella.ns.cloudflare.com`
NS	`walt.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b94^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`walt.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c194^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`walt.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2194^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`walt.ns.cloudflare.com`
		A	108.162.193.148^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`walt.ns.cloudflare.com`
		A	172.64.33.148^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`walt.ns.cloudflare.com`
		A	173.245.59.148^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`walt.ns.cloudflare.com`
MX	`route3.mx.cloudflare.net` ⭐
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
MX	`route1.mx.cloudflare.net`⁽⁹⁵⁾
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
MX	`route2.mx.cloudflare.net`⁽¹⁰⁰⁾
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.46.14, 172.67.222.62
		IPv6 hints	2606:4700:3031::ac43:de3e, 2606:4700:3035::6815:2e0e
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=201, name=cloudflare-ech.com
SOA	`gabriella.ns.cloudflare.com`dns@cloudflare.com serial=2410256079

`su`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.ripn.net` ⭐
	NS	`b.dns.ripn.net`
	NS	`c.tld-servers.ru`
	NS	`d.dns.ripn.net`
	NS	`e.dns.ripn.net`
	NS	`f.dns.ripn.net`
	SOA	`a.dns.ripn.net`hostmaster@ripn.net serial=650210058

⚠️ On DNS blocklist: spam-tlds

Subdomains

www.pku.su

Same first word

pku.su

pku.me

pku.org.tw

pku.nu

pku.cz

pku.pl

pku.cn

pku.in

pku.ru

pku.org

pku.at

pku.com.au

pku.org.hk

pku.org.uk

pku.gov.ua

pku.net

pku.fi

pku.com.pl

pku.xyz

pku.ca

pku.it

pku.ie

pku.ee

pku.fr

pku.ch

pku.today

pku.jp

pku.asia

pku.lt

pku.world

pku.com

pku.com.mx

pku.edu.cn

pku.nl

pku.com.my

pku.us

pku.de

pku.co

pku.dk

pku.org.cn

pku.kz

pku.hu

pku.pw

Similar names

puk.in

ukp.ac.kr

kup.ca

kup.us

upk.com.br

kup.tempurl.host

upk.de

puk.hu

puk.us

puk.cn

kpu.com

upk.be

upk.nl

upk.ru

kpu.df.gov.br

puk.elk.pl

kpu.org

kup.or.jp

kpu.nl

upk.ac.id

puk.mx

kpu.kiev.ua

kpu.it

kup.net

upk.se

upk.it

puk.co

kpu.com.ua

upk.co.jp

kup.com.mx

kpu.se

ukp.no

kpu.lublin.pl

puk.ca

kup.com.tr

ukp.eu

kup.ru

kup.su

kpu.co.kr

kpu.ac.kr

kup.se

kpu.ca

upk.by

ukp.org

puk.at

kup.cc

upk.ca

kup.im

kup.dk

puk.net.pl

ukp.se

ukp.it

kup.cn

upk.cn

kpu.jp

puk.cz

kup.ro

ukp.in

kpu.sk

kup.no

kup.be

kup.org

kpu.zp.ua

kpu.kr

puk.it

upk.ch

ukp.be

ukp.go.id

upk.com

kpu.info

kpu.sucks

upk.org.br

puk.ac.za

puk.co.za

kpu.net.cn

upk.pl

ukp.sk

ukp.cn

ukp.ch

kpu.ac.jp

upk.app

kup.online

puk.krakow.pl

upk.cc

upk.es

puk.com

upk.nyc

kup.co.id

puk.co.nz

upk.zp.ua

kup.tirol

ukp.de

ukp.fr

upk.in

puk.fr

kup.to

kup.nl

puk.se

puk.lol

upk.net

kpu.or.kr

upk.at

puk.immo

upk.sk

puk.nu

ukp.us

kpu.net.ua

kpu.go.id

kup.co

kup.at

ukp.jp

kpu.mobi

puk.co.id

kup.com

puk.com.pl

kpu.eu

kpu.co.id

upk.school

kpu.in

puk.ro

kpu.co

puk.no

kpu.net

puk.ru

puk.cc

ukp.at

kpu.edu.rs

puk.pl

kup.cz

puk.com.br

ukp.net

kup.ba

ukp.co

kpu.pl

ukp.nl

puk.org

kup.ch

kpu.cz

ukp.co.jp

ukp.cz

kpu.pp.ua

kpu.km.ua

kup.es

kup.rs

kup.com.tw

DNS History

31 records (9 active, 22 former)

●NSgabriella.ns.cloudflare.com2026-05-26 → 2026-08-02 · 3 obs

○ 2020-11-19 20:38:58
● 2026-05-26 09:02:40
● 2026-08-02 07:37:24

○NSns.masterhost.ru2015-08-21 → 2020-11-19 · 4 obs

● 2015-08-21 23:38:28
● 2020-11-19 20:38:58
○ 2026-05-26 09:02:40
○ 2026-08-02 07:37:24

○NSns1.masterhost.ru2015-08-21 → 2020-11-19 · 4 obs

● 2015-08-21 23:38:28
● 2020-11-19 20:38:58
○ 2026-05-26 09:02:40
○ 2026-08-02 07:37:24

○NSns2.masterhost.ru2015-08-21 → 2020-11-19 · 4 obs

● 2015-08-21 23:38:28
● 2020-11-19 20:38:58
○ 2026-05-26 09:02:40
○ 2026-08-02 07:37:24

●NSwalt.ns.cloudflare.com2026-05-26 → 2026-08-02 · 3 obs

○ 2020-11-19 20:38:58
● 2026-05-26 09:02:40
● 2026-08-02 07:37:24

●MXroute1.mx.cloudflare.net2026-05-26 → 2026-08-02 · 2 obs

● 2026-05-26 09:02:40
● 2026-08-02 07:37:24

●MXroute2.mx.cloudflare.net2026-05-26 → 2026-08-02 · 2 obs

● 2026-05-26 09:02:40
● 2026-08-02 07:37:24

●MXroute3.mx.cloudflare.net2026-05-26 → 2026-08-02 · 2 obs

● 2026-05-26 09:02:40
● 2026-08-02 07:37:24

●A104.21.46.142026-05-26 → 2026-08-02 · 3 obs

○ 2020-11-19 20:38:58
● 2026-05-26 09:02:40
● 2026-08-02 07:37:24

●A172.67.222.622026-05-26 → 2026-08-02 · 3 obs

○ 2020-11-19 20:38:58
● 2026-05-26 09:02:40
● 2026-08-02 07:37:24

●A2606:4700:3031::ac43:de3e2026-06-26 → 2026-08-02 · 3 obs

○ 2026-05-26 09:02:40
● 2026-06-26 17:24:48
● 2026-08-02 07:37:24

○A2606:4700:3033::6815:2e0e2026-05-26 → 2026-05-26 · 4 obs

○ 2020-11-19 20:38:58
● 2026-05-26 09:02:40
○ 2026-06-26 17:24:48
○ 2026-08-02 07:37:24

●A2606:4700:3035::6815:2e0e2026-06-26 → 2026-08-02 · 3 obs

○ 2026-05-26 09:02:40
● 2026-06-26 17:24:48
● 2026-08-02 07:37:24

○A2606:4700:3037::ac43:de3e2026-05-26 → 2026-05-26 · 4 obs

○ 2020-11-19 20:38:58
● 2026-05-26 09:02:40
○ 2026-06-26 17:24:48
○ 2026-08-02 07:37:24

○A2a00:15f8:a000:5:1:11:5:22b32015-08-21 → 2017-01-25 · 4 obs

● 2015-08-21 23:38:28
● 2017-01-25 21:19:00
○ 2020-11-19 20:38:58
○ 2026-08-02 07:37:24

○A2a00:15f8:a000:5:1:11:7:bc1d2020-11-19 → 2020-11-19 · 4 obs

○ 2017-01-25 21:19:00
● 2020-11-19 20:38:58
○ 2026-05-26 09:02:40
○ 2026-08-02 07:37:24

○A2a00:15f8:a000:5:1:12:5:22b32015-08-21 → 2017-01-25 · 4 obs

● 2015-08-21 23:38:28
● 2017-01-25 21:19:00
○ 2020-11-19 20:38:58
○ 2026-08-02 07:37:24

○A2a00:15f8:a000:5:1:12:7:bc1d2020-11-19 → 2020-11-19 · 4 obs

○ 2017-01-25 21:19:00
● 2020-11-19 20:38:58
○ 2026-05-26 09:02:40
○ 2026-08-02 07:37:24

○A2a00:15f8:a000:5:1:13:5:22b32015-08-21 → 2017-01-25 · 4 obs

● 2015-08-21 23:38:28
● 2017-01-25 21:19:00
○ 2020-11-19 20:38:58
○ 2026-08-02 07:37:24

○A2a00:15f8:a000:5:1:13:7:bc1d2020-11-19 → 2020-11-19 · 4 obs

○ 2017-01-25 21:19:00
● 2020-11-19 20:38:58
○ 2026-05-26 09:02:40
○ 2026-08-02 07:37:24

○A2a00:15f8:a000:5:1:14:5:22b32015-08-21 → 2017-01-25 · 4 obs

● 2015-08-21 23:38:28
● 2017-01-25 21:19:00
○ 2020-11-19 20:38:58
○ 2026-08-02 07:37:24

○A2a00:15f8:a000:5:1:14:7:bc1d2020-11-19 → 2020-11-19 · 4 obs

○ 2017-01-25 21:19:00
● 2020-11-19 20:38:58
○ 2026-05-26 09:02:40
○ 2026-08-02 07:37:24

○A90.156.201.1062015-08-21 → 2017-01-25 · 4 obs

● 2015-08-21 23:38:28
● 2017-01-25 21:19:00
○ 2020-11-19 20:38:58
○ 2026-08-02 07:37:24

○A90.156.201.122020-11-19 → 2020-11-19 · 4 obs

○ 2017-01-25 21:19:00
● 2020-11-19 20:38:58
○ 2026-05-26 09:02:40
○ 2026-08-02 07:37:24

○A90.156.201.1242015-08-21 → 2017-01-25 · 4 obs

● 2015-08-21 23:38:28
● 2017-01-25 21:19:00
○ 2020-11-19 20:38:58
○ 2026-08-02 07:37:24

○A90.156.201.182017-01-25 → 2017-01-25 · 4 obs

○ 2017-01-07 22:34:24
● 2017-01-25 21:19:00
○ 2020-11-19 20:38:58
○ 2026-08-02 07:37:24

○A90.156.201.352020-11-19 → 2020-11-19 · 4 obs

○ 2017-01-25 21:19:00
● 2020-11-19 20:38:58
○ 2026-05-26 09:02:40
○ 2026-08-02 07:37:24

○A90.156.201.372020-11-19 → 2020-11-19 · 4 obs

○ 2017-01-25 21:19:00
● 2020-11-19 20:38:58
○ 2026-05-26 09:02:40
○ 2026-08-02 07:37:24

○A90.156.201.512015-08-21 → 2017-01-25 · 4 obs

● 2015-08-21 23:38:28
● 2017-01-25 21:19:00
○ 2020-11-19 20:38:58
○ 2026-08-02 07:37:24

○A90.156.201.622015-08-21 → 2017-01-07 · 4 obs

● 2015-08-21 23:38:28
● 2017-01-07 22:34:24
○ 2017-01-25 21:19:00
○ 2026-08-02 07:37:24

○A90.156.201.862020-11-19 → 2020-11-19 · 4 obs

○ 2017-01-25 21:19:00
● 2020-11-19 20:38:58
○ 2026-05-26 09:02:40
○ 2026-08-02 07:37:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
su	b.dns.ripn.net, e.dns.ripn.net, c.tld-servers.ru, a.dns.ripn.net...	-
pku.su	gabriella.ns.cloudflare.com, walt.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.193.148

NS records: gabriella.ns.cloudflare.com, walt.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for pku.su (unsigned zone)

⏱️ Timing

Total: 1191ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.222.62, 104.21.46.14`
AAAA	2	`2606:4700:3035::6815:2e0e, 2606:4700:3031::ac43:de3e`
NS	2	`gabriella.ns.cloudflare.com, walt.ns.cloudflare.com`
MX	3	`route2.mx.cloudflare.net (pri: 100), route3.mx.cloudflare.net (pri: 18)...`
TXT	1	`v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`gabriella.ns.cloudflare.com dns.cloudfla`

Analysis

Hierarchy

The domain www.pku.su falls under the parent pku.su.

IP Addresses

pku.su directs to four IP numbers, which are 104.21.46.14, 172.67.222.62, 2606:4700:3031::ac43:de3e and 2606:4700:3035::6815:2e0e.

salopesvideos.com, www.handbalshop.nl, xp1nf.top and two other host names share IP numbers with pku.su.

Name Servers

The NS records for pku.su delegate to gabriella.ns.cloudflare.com and walt.ns.cloudflare.com.

pku.su uses the same name servers as several other domains — among them agcollegenaira.com, financiera.org, airsceneuk.org.uk and two more.

At least some of pku.su's name servers are shared with other domains, for example cuatoi.us, qtmalls.com, herba.lt and two more.

These name servers are often deployed together with the name servers jeremy.ns.cloudflare.com, kim.ns.cloudflare.com, garrett.ns.cloudflare.com and howard.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

gabriella.ns.cloudflare.com maps to 108.162.194.134, 162.159.38.134, 172.64.34.134 and 3 additional IP addresses.

walt.ns.cloudflare.com maps to 108.162.193.148, 172.64.33.148, 173.245.59.148 and 3 additional IP addresses.

Mail Servers

The MX records for pku.su list three mail servers: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

pku.su has at least partial mail server overlap with other domains such as dating-ratings.com, dingo-casino.net, esceptic.com and two more.

Hostnames that resolve to 6 IP addresses:

route1.mx.cloudflare.net maps to 162.159.205.11, 162.159.205.12, 162.159.205.13 and 3 additional IP addresses.

route2.mx.cloudflare.net maps to 162.159.205.17, 162.159.205.18, 162.159.205.19 and 3 additional IP addresses.

route3.mx.cloudflare.net maps to 162.159.205.23, 162.159.205.24, 162.159.205.25 and 3 additional IP addresses.

pku.su - robtex.com

pku.su

su

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

`pku.su`

`su`