cdyd.edu.vn - robtex.com

cdyd.edu.vn

DNSSEC⚠️ Not signed
A103.121.89.31🇻🇳 BKNS-AS-VN103.121.88.0/23 BKNS-CG-VN VT05-LK03 Xa La, Phuc La ward, Ha Dong district, Ha Noi city
NSamir.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b3e🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRamir.ns.cloudflare.com
A2803:f800:50::6ca2:c13e🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRamir.ns.cloudflare.com
A2a06:98c1:50::ac40:213e🇺🇸 Cloudflare2a06:98c1:50::/45
PTRamir.ns.cloudflare.com
A108.162.193.62🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRamir.ns.cloudflare.com
A172.64.33.62🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRamir.ns.cloudflare.com
A173.245.59.62🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRamir.ns.cloudflare.com
NSdorthy.ns.cloudflare.com
A2606:4700:50::adf5:3af9🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdorthy.ns.cloudflare.com
A2803:f800:50::6ca2:c0f9🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdorthy.ns.cloudflare.com
A2a06:98c1:50::ac40:20f9🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdorthy.ns.cloudflare.com
A108.162.192.249🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdorthy.ns.cloudflare.com
A172.64.32.249🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdorthy.ns.cloudflare.com
A173.245.58.249🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdorthy.ns.cloudflare.com
MXcdyd-edu-vn.mail.protection.outlook.com ⭐
A2a01:111:f403:cc09::🇸🇬 Microsoft2a01:111:f000::/36
PTRmail-sg2pr03cu00500.inbound.protection.outlook.com
A2a01:111:f403:cc1a::8🇯🇵 Microsoft2a01:111:f000::/36
PTRmail-tydpr03cu00100.inbound.protection.outlook.com
A2a01:111:f403:cc1f::4🇯🇵 Microsoft2a01:111:f000::/36
PTRmail-os8pr02cu00104.inbound.protection.outlook.com
A52.101.124.117🇯🇵 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-tydpr03cu00105.inbound.protection.outlook.com
A52.101.137.0🇸🇬 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-sg2pr03cu00500.inbound.protection.outlook.com
A52.101.157.80🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-os8pr02cu00100.inbound.protection.outlook.com
TXTgoogle-site-verification=1VmJnZ3ZgegRwYEsxrN_9PM4Wlf84RjBihYQdTVvmOM
TXTv=spf1 include:spf.protection.outlook.com -all
SOAamir.ns.cloudflare.comdns@cloudflare.com serial=2407843352

edu.vn

DNSSEC⚠️ Not signed
NSdns-master.vnnic.vn ⭐
NSa.dns-servers.vn ⚠️ Not in parent delegation
NSb.dns-servers.vn ⚠️ Not in parent delegation
NSc.dns-servers.vn ⚠️ Not in parent delegation
NSd.dns-servers.vn ⚠️ Not in parent delegation
NSe.dns-servers.vn ⚠️ Not in parent delegation
NSf.dns-servers.vn ⚠️ Not in parent delegation
NSg.dns-servers.vn ⚠️ Not in parent delegation
NSh.dns-servers.vn ⚠️ Not in parent delegation
SOAdns-master.vnnic.vnpostmaster@vnnic.vn serial=2018579324

Same first word

cdyd.cn
cdyd.com
cdyd.org
cdyd.edu.vn

Similar names

dydc.com.tw
dcyd.cn
yddc.net
yddc.com.cn
cddy.net
cddy.cn
dydc.org
ddyc.co.uk
ddcy.com
dydc.com
dycd.org
cydd.org.tr
dycd.de
dcyd.org
dycd.shop
ddyc.org
ydcd.cn
cydd.de
dydc.co.kr
dcyd.io
cydd.cn
yddc.cn
cydd.com
ddcy.cn
cddy.jp
yddc.com
dcyd.es
cddy.com
yddc.org
dycd.com

DNS History

4 records (4 active, 0 former)

NSamir.ns.cloudflare.comdorthy.ns.cloudflare.comMXcdyd-edu-vn.mail.protection.outlook.comA103.121.89.31
●NSamir.ns.cloudflare.com2026-04-30 → 2026-07-11 · 2 obs
● 2026-04-30 19:31:22
● 2026-07-11 05:58:58
●NSdorthy.ns.cloudflare.com2026-04-30 → 2026-07-11 · 2 obs
● 2026-04-30 19:31:22
● 2026-07-11 05:58:58
●MXcdyd-edu-vn.mail.protection.outlook.com2026-04-30 → 2026-07-11 · 2 obs
● 2026-04-30 19:31:22
● 2026-07-11 05:58:58
●A103.121.89.312026-04-30 → 2026-07-11 · 2 obs
● 2026-04-30 19:31:22
● 2026-07-11 05:58:58

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
vnc.dns-servers.vn, a.dns-servers.vn, e.dns-servers.vn, g.dns-servers.vn...-
cdyd.edu.vndorthy.ns.cloudflare.com, amir.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.58.249

NS records: dorthy.ns.cloudflare.com, amir.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cdyd.edu.vn (unsigned zone)

⏱️ Timing

Total: 1344ms | Queries: -

📄 Records

TypeCountSample Data
A1103.121.89.31
NS2amir.ns.cloudflare.com, dorthy.ns.cloudflare.com
MX1cdyd-edu-vn.mail.protection.outlook.com
TXT2google-site-verification=1VmJnZ3ZgegRwYE, v=spf1 include:spf.protection.outlook.co
SOA1amir.ns.cloudflare.com dns.cloudflare.co

Analysis

IP Addresses

cdyd.edu.vn resolves to one IP address: 103.121.89.31.

Name Servers

Two name servers handle the delegation for cdyd.edu.vn: amir.ns.cloudflare.com and dorthy.ns.cloudflare.com.

cdyd.edu.vn uses the same name servers as several other domains — among them gahanoi.com.vn, free-circuits.com, 123spareparts.co.uk and two more.

cdyd.edu.vn has at least partial name server overlap with other domains, such as moxigevshanguosai(0x73686974)uijian.cn, 227339.xyz, nadee-ud.go.th and two others.

These name servers tend to appear together with the name servers rayden.ns.cloudflare.com, abdullah.ns.cloudflare.com and kristin.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

amir.ns.cloudflare.com resolves to 108.162.193.62, 172.64.33.62 and 173.245.59.62 among others, with 3 other IP addresses in total.

dorthy.ns.cloudflare.com resolves to 108.162.192.249, 172.64.32.249 and 173.245.58.249 among others, with 3 other IP addresses in total.

Mail Servers

Mail for cdyd.edu.vn is handled by a single mail server, cdyd-edu-vn.mail.protection.outlook.com.

cdyd-edu-vn.mail.protection.outlook.com resolves to 6 IP addresses — 52.101.124.117, 52.101.137.0, 52.101.157.80 and 3 others.