sylva.edu.vn - robtex.com

sylva.edu.vn

DNSSEC🔒 Signed (DS record present)
A103.109.187.188🇻🇳 MAYSOC-VN103.109.187.0/24 VR-VN
NSdnssec1.pavietnam.vn ⭐
A2406:9c80::9000:202🇻🇳 SUPERDATA2406:9c80::/48 -VN
A112.213.82.186🇻🇳 SUPERDATA112.213.82.0/24 Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 24th floor, VNTA Tower, Duong Dinh Nghe, Cau Giay, Hanoi
PTRdnssec1.dotvndns.vn
NSdnssec2.pavietnam.vn
A2406:9c80::9000:d202🇻🇳 SUPERDATA2406:9c80::/48 -VN
A222.255.121.214🇻🇳 VDC222.255.121.0/24 VNPT
PTRdnssec2.dotvndns.vn
NSdnssecbak.pavietnam.net
A2406:9c80::9000:d203🇻🇳 SUPERDATA2406:9c80::/48 -VN
A203.162.78.50🇻🇳 VDC203.162.78.0/24 VNPT
PTRci78-50.netnam.vn
MXaspmx.l.google.com ⭐
A2607:f8b0:4023:c0b::1a🇺🇸 Google2607:f8b0::/32
PTRdd-in-f26.1e100.net
A142.251.2.27🇺🇸 Google142.251.2.0/24
PTRdl-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)
A2607:f8b0:4023:1015::1b🇺🇸 Google2607:f8b0::/32
PTRyudfwta-in-f27.1e100.net
A172.253.135.27🇺🇸 Google172.253.135.0/24
PTRyudfwta-in-f27.1e100.net
MXalt3.aspmx.l.google.com(10)
A2a00:1450:4009:c0f::1b🇬🇧 Google2a00:1450:4009::/48
PTRyulhrs-in-f27.1e100.net
A192.178.223.27🇺🇸 Google192.178.223.0/24
PTRyulhrs-in-f27.1e100.net
MXalt4.aspmx.l.google.com(10)
A2a00:1450:400c:c00::1b🇧🇪 Google2a00:1450:400c::/48
PTRws-in-f27.1e100.net
PTRws-in-x1b.1e100.net
A173.194.76.26🇺🇸 Google173.194.76.0/24
PTRws-in-f26.1e100.net
MXhmpy4sli24jzkqak5vedcwcugj3gtmnehwwyfh45i2e2nzjfevga.mx-verification.google.com(15)
TXTgoogle-site-verification=SRMJxmN0LTrT8LX6TEkrstEgoe0LBpPZXzQurHfndvg
TXTv=spf1 include:_spf.google.com ~all
TXTv=spf1 a mx ~all
SOAdnssec1.pavietnam.vnhostmaster@sylva.edu.vn 2026-04-29 #12

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=2018565100

Subdomains

dev-v2-cms.sylva.edu.vn
ow.sylva.edu.vn

Same first word

sylva.hu
sylva.fi
sylva.org.uk
sylva.org
sylva.be
sylva.jp
sylva.co.jp
sylva.fr
sylva.info
sylva.it
sylva.ch
sylva.cn
sylva.ru
sylva.com
sylva.edu.vn
sylva.net
sylva.de
sylva.ac
sylva.eu
sylva.band
sylva.nl
sylva.com.pl
sylva.cl

Similar names

ylvas.net
sylav.com
syval.net
savly.fr
vlasy.cz
valys.de
slayv.com
valys.nl
vlasy.sk
vysal.com
avysl.net
vasyl.net
alvys.jp
savyl.com
savly.nl
vasyl.org
salvy.ch
vasyl.info
salvy.com.br
svaly.com
vasly.com
alvys.com
vlasy.me
lysva.su
valys.se
savly.de
salvy.net
vasyl.us
avysl.org
yslav.com
avlys.com
valys.lt
svaly.info
slyva.com
lysva.ru
avysl.com
salvy.it
slyva.eu
vysla.net
valys.eu
lysva.biz
slavy.ru
vslay.com
svyla.com
vlasy.com
salvy.florist
ylvas.com
slyva.lt
lysva.info
ylvas.de
slavy.de
aslvy.com
valys.ro
lysva.net
savly.com
valys.co.uk

DNS History

12 records (10 active, 2 former)

NSdnssec1.pavietnam.vndnssec2.pavietnam.vndnssecbak.pavietnam.netns-hold.vnnic.vnMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comhmpy4sli24jzkqak5vedcwcugj3gtmnehwwyfh45i2e2nzjfevga.mx-verification.google.comA103.109.187.188117.122.125.107
●NSdnssec1.pavietnam.vn2026-05-01 → 2026-05-11 · 2 obs
● 2026-05-01 01:30:00
● 2026-05-11 16:14:48
●NSdnssec2.pavietnam.vn2026-05-01 → 2026-05-11 · 2 obs
● 2026-05-01 01:30:00
● 2026-05-11 16:14:48
●NSdnssecbak.pavietnam.net2026-05-01 → 2026-05-11 · 2 obs
● 2026-05-01 01:30:00
● 2026-05-11 16:14:48
○NSns-hold.vnnic.vn2026-05-01 → 2026-05-02 · 4 obs
● 2026-05-01 01:30:00
● 2026-05-02 15:17:26
○ 2026-05-06 18:37:16
○ 2026-05-11 16:14:48
●MXalt1.aspmx.l.google.com2026-05-01 → 2026-05-11 · 2 obs
● 2026-05-01 01:30:00
● 2026-05-11 16:14:48
●MXalt2.aspmx.l.google.com2026-05-01 → 2026-05-11 · 2 obs
● 2026-05-01 01:30:00
● 2026-05-11 16:14:48
●MXalt3.aspmx.l.google.com2026-05-01 → 2026-05-11 · 2 obs
● 2026-05-01 01:30:00
● 2026-05-11 16:14:48
●MXalt4.aspmx.l.google.com2026-05-01 → 2026-05-11 · 2 obs
● 2026-05-01 01:30:00
● 2026-05-11 16:14:48
●MXaspmx.l.google.com2026-05-01 → 2026-05-11 · 2 obs
● 2026-05-01 01:30:00
● 2026-05-11 16:14:48
●MXhmpy4sli24jzkqak5vedcwcugj3gtmnehwwyfh45i2e2nzjfevga.mx-verification.google.com2026-05-01 → 2026-05-11 · 2 obs
● 2026-05-01 01:30:00
● 2026-05-11 16:14:48
●A103.109.187.1882026-05-01 → 2026-05-11 · 5 obs
● 2026-05-01 01:30:00
● 2026-05-01 05:34:32
○ 2026-05-01 11:41:40
● 2026-05-01 14:56:12
● 2026-05-11 16:14:48
○A117.122.125.1072026-05-01 → 2026-05-01 · 4 obs
○ 2026-05-01 05:34:32
● 2026-05-01 11:41:40
○ 2026-05-01 14:56:12
○ 2026-05-11 16:14:48

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
vna.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn...-
sylva.edu.vndnssec1.pavietnam.vn, dnssec2.pavietnam.vn, dnssecbak.pavietnam.net-

✅ Authoritative Response

Server:222.255.121.214

NS records: dnssec1.pavietnam.vn, dnssec2.pavietnam.vn, dnssecbak.pavietnam.net

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 4558ms | Queries: -

📄 Records

TypeCountSample Data
A1103.109.187.188
NS3dnssecbak.pavietnam.net, dnssec1.pavietnam.vn...
MX6alt4.aspmx.l.google.com (pri: 10), aspmx.l.google.com (pri: 1)...
TXT3v=spf1 a mx ~all, v=spf1 include:_spf.google.com ~all...
SOA1dnssec1.pavietnam.vn hostmaster.sylva.ed

Analysis

Hierarchy

sylva.edu.vn is the parent of dev-v2-cms.sylva.edu.vn and ow.sylva.edu.vn.

IP Addresses

sylva.edu.vn points to an IP address: 103.109.187.188.

other host names include upsavietnam.com, yesedu.vn, songngusaokhue.edu.vn, icanschool.edu.vn and www.lever.edu.vn; they share IP numbers with sylva.edu.vn.

Name Servers

sylva.edu.vn is delegated to three name servers dnssecbak.pavietnam.net, dnssec1.pavietnam.vn and dnssec2.pavietnam.vn.

sylva.edu.vn at least partially shares name servers with other domains, for instance thaithinhphat.vn, daydaimienbac.com, ghemassageharukoh6.vn, vgt.vn and bbepsoi.com.

These name servers are commonly used alongside ns1.pavietnam.vn, ns2.pavietnam.vn and nsbak.pavietnam.net.

Host names with two IP numbers:

dnssecbak.pavietnam.net points to 2406:9c80::9000:d203 and 203.162.78.50; dnssec1.pavietnam.vn points to 2406:9c80::9000:202 and 112.213.82.186; dnssec2.pavietnam.vn points to 2406:9c80::9000:d202 and 222.255.121.214.

Mail Servers

Six mail servers handle sylva.edu.vn: aspmx.l.google.com, hmpy4sli24jzkqak5vedcwcugj3gtmnehwwyfh45i2e2nzjfevga.mx-verification.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

sylva.edu.vn shares at least partially some mail servers with other domains, for instance salesprofit.in, kensingtoncapitaladvisors.com, ar.listvote.com, ocean52.com and clune.org.

Mail servers frequently appear alongside aspmx3.googlemail.com, aspmx2.googlemail.com, aspmx4.googlemail.com and aspmx5.googlemail.com.

Host names with two IP numbers:

The host name aspmx.l.google.com points to 2607:f8b0:4023:c0b::1a and 142.251.2.27.

The host name alt1.aspmx.l.google.com points to 2800:3f0:4003:c0f::1a and 108.177.123.27.

The host name alt2.aspmx.l.google.com points to 2607:f8b0:4023:1015::1b and 172.253.135.27.

The host name alt3.aspmx.l.google.com points to 2a00:1450:4009:c0f::1b and 192.178.223.27.

The host name alt4.aspmx.l.google.com points to 2a00:1450:400c:c00::1b and 173.194.76.26.