hostmaster.dnu.vn - robtex.com

hostmaster.dnu.vn

CNAMEdnu.vn
DNSSEC⚠️ Not signed
A2606:4700:3035::6815:e80🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:9f28🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.14.128Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.159.40🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSamber.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a40🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRamber.ns.cloudflare.com
A2803:f800:50::6ca2:c040🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRamber.ns.cloudflare.com
A2a06:98c1:50::ac40:2040🇺🇸 Cloudflare2a06:98c1:50::/45
PTRamber.ns.cloudflare.com
A108.162.192.64🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRamber.ns.cloudflare.com
A172.64.32.64🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRamber.ns.cloudflare.com
A173.245.58.64🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRamber.ns.cloudflare.com
NSdarl.ns.cloudflare.com
A2606:4700:58::adf5:3b62🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdarl.ns.cloudflare.com
A2803:f800:50::6ca2:c162🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdarl.ns.cloudflare.com
A2a06:98c1:50::ac40:2162🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdarl.ns.cloudflare.com
A108.162.193.98🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdarl.ns.cloudflare.com
A172.64.33.98🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdarl.ns.cloudflare.com
A173.245.59.98🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdarl.ns.cloudflare.com
MXm1.larksuite.com ⭐
TXTv=spf1 +include:spf.onlarksuite.com ~all
TXTverification-code-site-App_lark=LOFmMZn0WraAjbvRBdkA
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.14.128, 172.67.159.40
IPv6 hints2606:4700:3035::6815:e80, 2606:4700:3037::ac43:9f28
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=240, name=cloudflare-ech.com
SOAamber.ns.cloudflare.comdns@cloudflare.com serial=2400577361

dnu.vn

DNSSEC⚠️ Not signed
A2606:4700:3035::6815:e80🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:9f28🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.14.128Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.159.40🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSamber.ns.cloudflare.com ⭐
NSdarl.ns.cloudflare.com
MXm1.larksuite.com ⭐
TXTv=spf1 +include:spf.onlarksuite.com ~all
TXTverification-code-site-App_lark=LOFmMZn0WraAjbvRBdkA
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.14.128, 172.67.159.40
IPv6 hints2606:4700:3035::6815:e80, 2606:4700:3037::ac43:9f28
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=240, name=cloudflare-ech.com
SOAamber.ns.cloudflare.comdns@cloudflare.com serial=2400577361

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DNS History

13 records (2 active, 11 former)

20162017201820192020202120222023202420252026NSns-bak.vdns.vnns1.visiondns.netns2.visiondns.netMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comaspmx4.googlemail.comaspmx5.googlemail.comA103.234.39.954.254.135.150CNAMEdnu.vn
○NSns-bak.vdns.vn2015-12-01 → 2016-09-09 · 4 obs
● 2015-12-01 15:22:04
● 2016-09-09 02:10:56
○ 2026-03-25 04:27:22
○ 2026-05-11 11:13:12
○NSns1.visiondns.net2015-12-01 → 2016-09-09 · 4 obs
● 2015-12-01 15:22:04
● 2016-09-09 02:10:56
○ 2026-03-25 04:27:22
○ 2026-05-11 11:13:12
○NSns2.visiondns.net2015-12-01 → 2016-09-09 · 4 obs
● 2015-12-01 15:22:04
● 2016-09-09 02:10:56
○ 2026-03-25 04:27:22
○ 2026-05-11 11:13:12
○MXalt1.aspmx.l.google.com2015-12-01 → 2016-06-21 · 4 obs
● 2015-12-01 15:22:04
● 2016-06-21 20:35:06
○ 2026-03-25 04:27:22
○ 2026-05-11 11:13:12
○MXalt2.aspmx.l.google.com2015-12-01 → 2016-06-21 · 4 obs
● 2015-12-01 15:22:04
● 2016-06-21 20:35:06
○ 2026-03-25 04:27:22
○ 2026-05-11 11:13:12
○MXaspmx.l.google.com2015-12-01 → 2016-06-21 · 4 obs
● 2015-12-01 15:22:04
● 2016-06-21 20:35:06
○ 2026-03-25 04:27:22
○ 2026-05-11 11:13:12
○MXaspmx2.googlemail.com2015-12-01 → 2016-06-21 · 4 obs
● 2015-12-01 15:22:04
● 2016-06-21 20:35:06
○ 2026-03-25 04:27:22
○ 2026-05-11 11:13:12
○MXaspmx3.googlemail.com2015-12-01 → 2016-06-21 · 4 obs
● 2015-12-01 15:22:04
● 2016-06-21 20:35:06
○ 2026-03-25 04:27:22
○ 2026-05-11 11:13:12
○MXaspmx4.googlemail.com2015-12-01 → 2016-06-21 · 4 obs
● 2015-12-01 15:22:04
● 2016-06-21 20:35:06
○ 2026-03-25 04:27:22
○ 2026-05-11 11:13:12
○MXaspmx5.googlemail.com2015-12-01 → 2016-06-21 · 4 obs
● 2015-12-01 15:22:04
● 2016-06-21 20:35:06
○ 2026-03-25 04:27:22
○ 2026-05-11 11:13:12
●A103.234.39.92016-06-21 → 2026-05-11 · 3 obs
○ 2016-03-07 04:36:04
● 2016-06-21 20:35:06
● 2026-05-11 11:13:12
○A54.254.135.1502015-12-01 → 2016-03-07 · 4 obs
● 2015-12-01 15:22:04
● 2016-03-07 04:36:04
○ 2016-06-21 20:35:06
○ 2026-05-11 11:13:12
●CNAMEdnu.vn2015-08-20 → 2026-05-11 · 2 obs
● 2015-08-20 18:06:14
● 2026-05-11 11:13:12

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
vna.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn...-
dnu.vndarl.ns.cloudflare.com, amber.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.33.98

NS records: darl.ns.cloudflare.com, amber.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dnu.vn (unsigned zone)

⏱️ Timing

Total: 965ms | Queries: -

📄 Records

TypeCountSample Data
A1103.234.39.9
CNAME1dnu.vn

Analysis

IP Addresses

hostmaster.dnu.vn resolves to four IP numbers: 2606:4700:3035::6815:e80, 2606:4700:3037::ac43:9f28, 104.21.14.128 and 172.67.159.40.

other host names for instance www.vopros-pdd.info, sherwoodforestgolfclub.co.uk, ugandachat.com, mail.ntlite.ru and swiftbrakedisc.com share IP numbers with hostmaster.dnu.vn.

Name Servers

hostmaster.dnu.vn is delegated to two name servers: amber.ns.cloudflare.com and darl.ns.cloudflare.com.

hostmaster.dnu.vn shares the same name server setup as other domains, for example eldercaresolutionsllc.com, pdfhosting.com, engineeredlifting.com, tesalis.es and crazywebstudio.com.

hostmaster.dnu.vn at least partially shares name servers with other domains, for instance arcomia.io, savadra.net, pld-c.com, citavi.eu and z8un.com.

These name servers are commonly used with rosa.ns.cloudflare.com, neil.ns.cloudflare.com, aiden.ns.cloudflare.com and arch.ns.cloudflare.com.

Host names with six IP numbers:

amber.ns.cloudflare.com points to: 2606:4700:50::adf5:3a40, 2803:f800:50::6ca2:c040, 2a06:98c1:50::ac40:2040, 108.162.192.64, 172.64.32.64 and 173.245.58.64; darl.ns.cloudflare.com points to: 2606:4700:58::adf5:3b62, 2803:f800:50::6ca2:c162, 2a06:98c1:50::ac40:2162, 108.162.193.98, 172.64.33.98 and 173.245.59.98.

Mail Servers

hostmaster.dnu.vn is handled by a single mail server, m1.larksuite.com.

hostmaster.dnu.vn shares the same mail server setup as other domains, for instance spmpaper.me, dewkilo.com, tkl.com.vn, boct.io and info.larksuite.com.

hostmaster.dnu.vn shares mail servers with other domains at least partially, including airev.net, wins-net.com, akashjha.com, chainup.com and tej.jp.

these mail servers are often used with the mail servers mx2.larksuite.com, m2.larksuite.com, mx3.larksuite.com and m3.larksuite.com.