lichhoc.vn - robtex.com

lichhoc.vn

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:2848🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:b535🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.40.72Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.181.53🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSfrida.ns.cloudflare.com ⭐
A2606:4700:50::a29f:2689🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRfrida.ns.cloudflare.com
A2803:f800:50::6ca2:c289🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRfrida.ns.cloudflare.com
A2a06:98c1:50::ac40:2289🇺🇸 Cloudflare2a06:98c1:50::/45
PTRfrida.ns.cloudflare.com
A108.162.194.137🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRfrida.ns.cloudflare.com
A162.159.38.137Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRfrida.ns.cloudflare.com
A172.64.34.137🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRfrida.ns.cloudflare.com
NSkevin.ns.cloudflare.com
A2606:4700:58::adf5:3bbf🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkevin.ns.cloudflare.com
A2803:f800:50::6ca2:c1bf🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRkevin.ns.cloudflare.com
A2a06:98c1:50::ac40:21bf🇺🇸 Cloudflare2a06:98c1:50::/45
PTRkevin.ns.cloudflare.com
A108.162.193.191🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkevin.ns.cloudflare.com
A172.64.33.191🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkevin.ns.cloudflare.com
A173.245.59.191🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkevin.ns.cloudflare.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c1d::1b🇺🇸 Google2607:f8b0:4004::/48
PTRww-in-f27.1e100.net
A192.179.18.27🇺🇸 Google192.178.0.0/15
PTRry-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2800:3f0:4003:c0f::1a🇨🇱 Google2800:3f0:4003::/48
A108.177.123.27🇺🇸 Google108.177.123.0/24
PTRlcscld-in-f27.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:400b:c02::1b🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f27.1e100.net
A172.253.116.27🇺🇸 Google172.253.116.0/24
PTRdj-in-f27.1e100.net
MXalt3.aspmx.l.google.com(10)
A2a00:1450:4009:c0f::1b🇬🇧 Google2a00:1450:4009::/48
PTRyulhrs-in-f27.1e100.net
A192.178.223.26🇺🇸 Google192.178.223.0/24
PTRyulhrs-in-f26.1e100.net
MXalt4.aspmx.l.google.com(10)
A2a00:1450:400c:c23::1a🇧🇪 Google2a00:1450:400c::/48
PTRyubrupd-in-f26.1e100.net
A172.253.157.26🇺🇸 Google172.253.0.0/16
PTRyubrupd-in-f26.1e100.net
TXTgoogle-site-verification=MjuiUwgfUJ2L3rSh8SL_1NLW3SBydBy-3GzTrpdNtXQ
TXTv=spf1 include:_spf.google.com -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.40.72, 172.67.181.53
IPv6 hints2606:4700:3031::6815:2848, 2606:4700:3035::ac43:b535
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=19, name=cloudflare-ech.com
SOAfrida.ns.cloudflare.comdns@cloudflare.com serial=2405637361

vn

DNSSEC🔒 Signed (DS record present)
NSdns-master.vnnic.vn ⭐
NSa.dns-servers.vn
NSb.dns-servers.vn
NSc.dns-servers.vn
NSd.dns-servers.vn
NSe.dns-servers.vn
NSf.dns-servers.vn
NSg.dns-servers.vn
NSh.dns-servers.vn
SOAdns-master.vnnic.vnpostmaster@vnnic.vn 2031-01-21 #14

Same first word

lichhoc.edu.vn
lichhoc.vn

DNS History

23 records (11 active, 12 former)

20162017201820192020202120222023202420252026NSfrida.ns.cloudflare.comkevin.ns.cloudflare.comns-master.inet.vnns1.inet.vnns2.inet.vnMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comA104.21.40.72172.67.181.532606:4700:3031::6815:28482606:4700:3035::ac43:b535188.114.96.0188.114.97.02606:4700:3032::ac43:b5352606:4700:3033::6815:28482a06:98c1:3120::2a06:98c1:3120::42a06:98c1:3121::2a06:98c1:3121::469.89.31.223
●NSfrida.ns.cloudflare.com2026-05-25 → 2026-07-18 · 3 obs
○ 2017-05-18 12:07:56
● 2026-05-25 14:45:58
● 2026-07-18 17:40:40
●NSkevin.ns.cloudflare.com2026-05-25 → 2026-07-18 · 3 obs
○ 2017-05-18 12:07:56
● 2026-05-25 14:45:58
● 2026-07-18 17:40:40
○NSns-master.inet.vn2015-10-22 → 2017-05-18 · 4 obs
● 2015-10-22 17:31:08
● 2017-05-18 12:07:56
○ 2026-05-25 14:45:58
○ 2026-07-18 17:40:40
○NSns1.inet.vn2015-10-22 → 2017-05-18 · 4 obs
● 2015-10-22 17:31:08
● 2017-05-18 12:07:56
○ 2026-05-25 14:45:58
○ 2026-07-18 17:40:40
○NSns2.inet.vn2015-10-22 → 2017-05-18 · 4 obs
● 2015-10-22 17:31:08
● 2017-05-18 12:07:56
○ 2026-05-25 14:45:58
○ 2026-07-18 17:40:40
●MXalt1.aspmx.l.google.com2026-05-25 → 2026-07-18 · 2 obs
● 2026-05-25 14:45:58
● 2026-07-18 17:40:40
●MXalt2.aspmx.l.google.com2026-05-25 → 2026-07-18 · 2 obs
● 2026-05-25 14:45:58
● 2026-07-18 17:40:40
●MXalt3.aspmx.l.google.com2026-05-25 → 2026-07-18 · 2 obs
● 2026-05-25 14:45:58
● 2026-07-18 17:40:40
●MXalt4.aspmx.l.google.com2026-05-25 → 2026-07-18 · 2 obs
● 2026-05-25 14:45:58
● 2026-07-18 17:40:40
●MXaspmx.l.google.com2026-05-25 → 2026-07-18 · 2 obs
● 2026-05-25 14:45:58
● 2026-07-18 17:40:40
●A104.21.40.722026-05-25 → 2026-07-18 · 4 obs
○ 2017-05-18 12:07:56
● 2026-05-25 14:45:58
○ 2026-06-20 18:29:36
● 2026-07-18 17:40:40
●A172.67.181.532026-05-25 → 2026-07-18 · 4 obs
○ 2017-05-18 12:07:56
● 2026-05-25 14:45:58
○ 2026-06-20 18:29:36
● 2026-07-18 17:40:40
○A188.114.96.02026-06-20 → 2026-06-20 · 3 obs
○ 2026-05-25 14:45:58
● 2026-06-20 18:29:36
○ 2026-07-18 17:40:40
○A188.114.97.02026-06-20 → 2026-06-20 · 3 obs
○ 2026-05-25 14:45:58
● 2026-06-20 18:29:36
○ 2026-07-18 17:40:40
●A2606:4700:3031::6815:28482026-07-18 → 2026-07-18 · 2 obs
○ 2026-06-20 21:40:08
● 2026-07-18 17:40:40
○A2606:4700:3032::ac43:b5352026-05-25 → 2026-05-25 · 4 obs
○ 2017-05-18 12:07:56
● 2026-05-25 14:45:58
○ 2026-06-20 18:29:36
○ 2026-07-18 17:40:40
○A2606:4700:3033::6815:28482026-05-25 → 2026-05-25 · 4 obs
○ 2017-05-18 12:07:56
● 2026-05-25 14:45:58
○ 2026-06-20 18:29:36
○ 2026-07-18 17:40:40
●A2606:4700:3035::ac43:b5352026-07-18 → 2026-07-18 · 2 obs
○ 2026-06-20 21:40:08
● 2026-07-18 17:40:40
○A2a06:98c1:3120::2026-06-20 → 2026-06-20 · 3 obs
○ 2026-06-20 18:29:36
● 2026-06-20 21:40:08
○ 2026-07-18 17:40:40
○A2a06:98c1:3120::42026-06-20 → 2026-06-20 · 4 obs
○ 2026-05-25 14:45:58
● 2026-06-20 18:29:36
○ 2026-06-20 21:40:08
○ 2026-07-18 17:40:40
○A2a06:98c1:3121::2026-06-20 → 2026-06-20 · 3 obs
○ 2026-06-20 18:29:36
● 2026-06-20 21:40:08
○ 2026-07-18 17:40:40
○A2a06:98c1:3121::42026-06-20 → 2026-06-20 · 4 obs
○ 2026-05-25 14:45:58
● 2026-06-20 18:29:36
○ 2026-06-20 21:40:08
○ 2026-07-18 17:40:40
○A69.89.31.2232015-06-04 → 2017-05-18 · 4 obs
● 2015-06-04 07:55:48
● 2017-05-18 12:07:56
○ 2026-05-25 14:45:58
○ 2026-07-18 17:40:40

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
vng.dns-servers.vn, c.dns-servers.vn, a.dns-servers.vn, h.dns-servers.vn...-
lichhoc.vnfrida.ns.cloudflare.com, kevin.ns.cloudflare.com-

✅ Authoritative Response

Server:162.159.38.137

NS records: frida.ns.cloudflare.com, kevin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for lichhoc.vn (unsigned zone)

⏱️ Timing

Total: 712ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.40.72, 172.67.181.53
AAAA22606:4700:3035::ac43:b535, 2606:4700:3031::6815:2848
NS2frida.ns.cloudflare.com, kevin.ns.cloudflare.com
MX5aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...
TXT2google-site-verification=MjuiUwgfUJ2L3rS, v=spf1 include:_spf.google.com -all
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1frida.ns.cloudflare.com dns.cloudflare.c

Analysis

IP Addresses

lichhoc.vn directs to four IP numbers, which are 104.21.40.72, 172.67.181.53, 2606:4700:3031::6815:2848 and 2606:4700:3035::ac43:b535.

Two other host names, along with denford.co.uk, archysport.com and whezi.com, also share IP numbers with lichhoc.vn.

Name Servers

DNS delegation for lichhoc.vn points to two name servers: frida.ns.cloudflare.com and kevin.ns.cloudflare.com.

lichhoc.vn shares its NS records with other domains, for example yakpress.com, rikvip.xyz, kemsakura.vn and two others.

There is at least partial name server overlap between lichhoc.vn and other domains — eurokratie.net, vid8.com.br, oslavypredeti.sk and two more among them.

These name servers frequently co-occur with the name servers anton.ns.cloudflare.com and dina.ns.cloudflare.com.

DNS names with 6 IP addresses:

frida.ns.cloudflare.com has IP addresses 108.162.194.137, 162.159.38.137 and 172.64.34.137, plus 3 other.

kevin.ns.cloudflare.com has IP addresses 108.162.193.191, 172.64.33.191 and 173.245.59.191, plus 3 other.

Mail Servers

Five mail servers handle lichhoc.vn: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

There is at least a partial MX overlap between lichhoc.vn and other domains, including ns500754.ns500742.ns500671.ns500754.ns500671.ns500704.ns500688.ns500678.ns500649.ns500291.ns500671.lusty(0x736c7574)z.com, ns500599.ns500599.ns500737.ns500737.ns500599.ns500599.ns500724.ns500599.ns500599.ns500697.ns500583.www.yummyflingsfinder.com, ns500734.ns500693.ns500699.ns500699.ns500693.ns500734.ns500734.ns500699.ns500588.ns500699.ns500699.ns500699.ns500588.ns500683.ns500588.ns500683.ns500602.dtrkdll.com and two others.

These mail servers tend to appear in combination with mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 others.

Host names that have two IP addresses:

aspmx.l.google.com has two IP addresses: 192.179.18.27 and 2607:f8b0:4004:c1d::1b.

alt1.aspmx.l.google.com has two IP addresses: 108.177.123.27 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com has two IP addresses: 172.253.116.27 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com has two IP addresses: 192.178.223.26 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com has two IP addresses: 172.253.157.26 and 2a00:1450:400c:c23::1a.