professor168.com - robtex.com

professor168.com

DNSSEC⚠️ Not signed
A2606:4700:3034::6815:2c3b🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:c3de🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.44.59Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.195.222🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSnancy.ns.cloudflare.com ⭐
A2606:4700:50::a29f:2654🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnancy.ns.cloudflare.com
A2803:f800:50::6ca2:c254🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRnancy.ns.cloudflare.com
A2a06:98c1:50::ac40:2254🇺🇸 Cloudflare2a06:98c1:50::/45
PTRnancy.ns.cloudflare.com
A108.162.194.84🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnancy.ns.cloudflare.com
A162.159.38.84Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnancy.ns.cloudflare.com
A172.64.34.84🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnancy.ns.cloudflare.com
NSpiers.ns.cloudflare.com
A2606:4700:58::a29f:2c10🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpiers.ns.cloudflare.com
A2803:f800:50::6ca2:c310🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRpiers.ns.cloudflare.com
A2a06:98c1:50::ac40:2310🇺🇸 Cloudflare2a06:98c1:50::/45
PTRpiers.ns.cloudflare.com
A108.162.195.16🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpiers.ns.cloudflare.com
A162.159.44.16Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpiers.ns.cloudflare.com
A172.64.35.16🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpiers.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.44.59, 172.67.195.222
IPv6 hints2606:4700:3034::6815:2c3b, 2606:4700:3036::ac43:c3de
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=81, name=cloudflare-ech.com
SOAnancy.ns.cloudflare.comdns@cloudflare.com serial=2406404432

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1785275802

Subdomains

www.professor168.com

Same first word

professor168.com

DNS History

17 records (6 active, 11 former)

20162017201820192020202120222023202420252026NSnancy.ns.cloudflare.compiers.ns.cloudflare.comns19.xincache.comns20.xincache.comMXmail.professor168.comA104.21.44.59172.67.195.2222606:4700:3034::6815:2c3b2606:4700:3036::ac43:c3de116.251.96.85127.0.0.1173.252.246.185188.114.96.0188.114.97.02606:4700:3036::6815:2c3b2a06:98c1:3120::2a06:98c1:3121::
●NSnancy.ns.cloudflare.com2026-05-12 → 2026-07-28 · 3 obs
○ 2017-02-14 16:35:50
● 2026-05-12 09:14:48
● 2026-07-28 22:24:02
○NSns19.xincache.com2015-05-08 → 2016-05-04 · 4 obs
● 2015-05-08 03:48:42
● 2016-05-04 09:11:20
○ 2017-02-14 16:35:50
○ 2026-07-28 22:24:02
○NSns20.xincache.com2015-05-08 → 2016-05-04 · 4 obs
● 2015-05-08 03:48:42
● 2016-05-04 09:11:20
○ 2017-02-14 16:35:50
○ 2026-07-28 22:24:02
●NSpiers.ns.cloudflare.com2026-05-12 → 2026-07-28 · 3 obs
○ 2017-02-14 16:35:50
● 2026-05-12 09:14:48
● 2026-07-28 22:24:02
○MXmail.professor168.com2015-05-08 → 2016-05-04 · 4 obs
● 2015-05-08 03:48:42
● 2016-05-04 09:11:20
○ 2017-02-14 16:35:50
○ 2026-07-28 22:24:02
●A104.21.44.592026-05-12 → 2026-07-28 · 5 obs
○ 2019-12-30 07:11:24
● 2026-05-12 09:14:48
○ 2026-06-25 22:21:52
● 2026-07-02 22:16:22
● 2026-07-28 22:24:02
○A116.251.96.852015-10-10 → 2016-05-04 · 5 obs
○ 2015-05-08 03:48:42
● 2015-10-10 16:24:12
● 2016-05-04 09:11:20
○ 2017-02-14 16:35:50
○ 2026-07-28 22:24:02
○A127.0.0.12019-12-30 → 2019-12-30 · 4 obs
○ 2017-02-14 16:35:50
● 2019-12-30 07:11:24
○ 2026-05-12 09:14:48
○ 2026-07-28 22:24:02
●A172.67.195.2222026-05-12 → 2026-07-28 · 5 obs
○ 2019-12-30 07:11:24
● 2026-05-12 09:14:48
○ 2026-06-25 22:21:52
● 2026-07-02 22:16:22
● 2026-07-28 22:24:02
○A173.252.246.1852015-05-08 → 2015-05-08 · 3 obs
● 2015-05-08 03:48:42
○ 2015-10-10 16:24:12
○ 2026-07-28 22:24:02
○A188.114.96.02026-06-25 → 2026-06-25 · 4 obs
○ 2026-05-12 09:14:48
● 2026-06-25 22:21:52
○ 2026-07-02 22:16:22
○ 2026-07-28 22:24:02
○A188.114.97.02026-06-25 → 2026-06-25 · 4 obs
○ 2026-05-12 09:14:48
● 2026-06-25 22:21:52
○ 2026-07-02 22:16:22
○ 2026-07-28 22:24:02
●A2606:4700:3034::6815:2c3b2026-07-02 → 2026-07-28 · 3 obs
○ 2026-06-25 22:21:52
● 2026-07-02 22:16:22
● 2026-07-28 22:24:02
○A2606:4700:3036::6815:2c3b2026-05-12 → 2026-05-12 · 4 obs
○ 2019-12-30 07:11:24
● 2026-05-12 09:14:48
○ 2026-06-25 22:21:52
○ 2026-07-28 22:24:02
●A2606:4700:3036::ac43:c3de2026-05-12 → 2026-07-28 · 5 obs
○ 2019-12-30 07:11:24
● 2026-05-12 09:14:48
○ 2026-06-25 22:21:52
● 2026-07-02 22:16:22
● 2026-07-28 22:24:02
○A2a06:98c1:3120::2026-06-25 → 2026-06-25 · 4 obs
○ 2026-05-12 09:14:48
● 2026-06-25 22:21:52
○ 2026-07-02 22:16:22
○ 2026-07-28 22:24:02
○A2a06:98c1:3121::2026-06-25 → 2026-06-25 · 4 obs
○ 2026-05-12 09:14:48
● 2026-06-25 22:21:52
○ 2026-07-02 22:16:22
○ 2026-07-28 22:24:02

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
come.gtld-servers.net, c.gtld-servers.net, a.gtld-servers.net, k.gtld-servers.net...-
professor168.comnancy.ns.cloudflare.com, piers.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.84

NS records: nancy.ns.cloudflare.com, piers.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for professor168.com (unsigned zone)

⏱️ Timing

Total: 148ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.195.222, 104.21.44.59
AAAA22606:4700:3034::6815:2c3b, 2606:4700:3036::ac43:c3de
NS2nancy.ns.cloudflare.com, piers.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1nancy.ns.cloudflare.com dns.cloudflare.c

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (nancy.ns.cloudflare.com, nancy.ns.cloudflare.com, nancy.ns.cloudflare.com...)

Analysis

Hierarchy

www.professor168.com is a subdomain of professor168.com.

IP Addresses

professor168.com points to the four IP addresses 104.21.44.59, 172.67.195.222, 2606:4700:3034::6815:2c3b and 2606:4700:3036::ac43:c3de.

oibeats.com, purekrea.com, iwoka.co plus two other host names have IP numbers in common with professor168.com.

Name Servers

The NS records for professor168.com delegate to nancy.ns.cloudflare.com and piers.ns.cloudflare.com.

The name server configuration of professor168.com is shared with other domains, for instance philipp-pleins.com, okwintv-tructiepbongda.vip, onlinepropertypromotion.com and two others.

The name servers of professor168.com overlap at least partially with those of other domains — among them sap0529k3b.vip, chinaift.com, sap2860ri7.cc and two more.

The name servers rudy.ns.cloudflare.com, ali.ns.cloudflare.com and tricia.ns.cloudflare.com are commonly seen alongside these name servers.

Hosts with 6 IP addresses each:

nancy.ns.cloudflare.com maps to 108.162.194.84, 162.159.38.84, 172.64.34.84 and 3 additional IP addresses.

piers.ns.cloudflare.com maps to 108.162.195.16, 162.159.44.16, 172.64.35.16 and 3 additional IP addresses.