osstax.com - robtex.com

osstax.com

DNSSEC⚠️ Not signed
A2404:c6c0::55🇻🇳 VNPT-AS-VN2404:c6c0::/48 VNPT-NET
A103.138.88.55🇻🇳 VNPT-AS-VN103.138.88.0/23 VNPT-NET
NSns1.matbao.vn ⭐ ⚠️ Not in parent delegation
A13.250.228.99🇸🇬 Amazon13.250.0.0/15 EC2 SIN prefix
PTRec2-13-250-228-99.ap-southeast-1.compute.amazonaws.com
A103.110.128.60🇻🇳 AXYS-VN103.110.128.0/23
NSns1.matbao.com ⚠️ Not in zone NS records
A13.250.228.99🇸🇬 Amazon13.250.0.0/15 EC2 SIN prefix
PTRec2-13-250-228-99.ap-southeast-1.compute.amazonaws.com
A103.110.128.60🇻🇳 AXYS-VN103.110.128.0/23
NSns2.matbao.com ⚠️ Not in zone NS records
A35.198.203.127🇸🇬 Google35.198.192.0/20
PTR127.203.198.35.bc.googleusercontent.com
A103.138.89.11🇻🇳 VNPT-AS-VN103.138.88.0/23 VNPT-NET
NSns2.matbao.vn ⚠️ Not in parent delegation
A35.198.203.127🇸🇬 Google35.198.192.0/20
PTR127.203.198.35.bc.googleusercontent.com
A103.138.89.11🇻🇳 VNPT-AS-VN103.138.88.0/23 VNPT-NET
MXpro01.emailserver.vn ⭐
A103.110.129.101🇻🇳 AXYS-VN103.110.128.0/23
PTRpro01.emailserver.vn
TXTv=spf1 mx include:emailserver.vn include:spf.protection.outlook.com -all
TXTMS=ms36711640
SOAns1.matbao.vnadmin@matbao.com 2025-08-12 #1

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=1774569662

Same first word

osstax.com

Similar names

sostax.com
sxosta.com
taxsos.com
xsosta.com
sostax.net
xtossa.com
sostax.co.kr
taxsos.net
sxosta.cn

DNS History

13 records (7 active, 6 former)

2017201820192020202120222023202420252026NSns1.matbao.comns1.matbao.vnns2.matbao.comns2.matbao.vnns39.domaincontrol.comns40.domaincontrol.comMXpro01.emailserver.vnmail.osstax.commail1.osstax.comA103.138.88.552404:c6c0::55108.179.232.42112.78.2.209
●NSns1.matbao.com2026-03-03 → 2026-03-27 · 3 obs
○ 2017-10-07 23:50:18
● 2026-03-03 13:23:56
● 2026-03-27 00:25:34
●NSns1.matbao.vn2017-10-07 → 2026-03-27 · 3 obs
○ 2016-12-13 19:37:24
● 2017-10-07 23:50:18
● 2026-03-27 00:25:34
●NSns2.matbao.com2026-03-03 → 2026-03-27 · 3 obs
○ 2017-10-07 23:50:18
● 2026-03-03 13:23:56
● 2026-03-27 00:25:34
●NSns2.matbao.vn2017-10-07 → 2026-03-27 · 3 obs
○ 2016-12-13 19:37:24
● 2017-10-07 23:50:18
● 2026-03-27 00:25:34
○NSns39.domaincontrol.com2016-12-13 → 2016-12-13 · 3 obs
● 2016-12-13 19:37:24
○ 2017-10-07 23:50:18
○ 2026-03-27 00:25:34
○NSns40.domaincontrol.com2016-12-13 → 2016-12-13 · 3 obs
● 2016-12-13 19:37:24
○ 2017-10-07 23:50:18
○ 2026-03-27 00:25:34
○MXmail.osstax.com2017-10-07 → 2017-10-07 · 4 obs
○ 2016-12-13 19:37:24
● 2017-10-07 23:50:18
○ 2026-03-03 13:23:56
○ 2026-03-27 00:25:34
○MXmail1.osstax.com2016-12-13 → 2016-12-13 · 3 obs
● 2016-12-13 19:37:24
○ 2017-10-07 23:50:18
○ 2026-03-27 00:25:34
●MXpro01.emailserver.vn2026-03-03 → 2026-03-27 · 3 obs
○ 2017-10-07 23:50:18
● 2026-03-03 13:23:56
● 2026-03-27 00:25:34
●A103.138.88.552026-03-03 → 2026-03-27 · 3 obs
○ 2017-10-07 23:50:18
● 2026-03-03 13:23:56
● 2026-03-27 00:25:34
○A108.179.232.422016-12-13 → 2016-12-13 · 3 obs
● 2016-12-13 19:37:24
○ 2017-10-07 23:50:18
○ 2026-03-27 00:25:34
○A112.78.2.2092017-10-07 → 2017-10-07 · 4 obs
○ 2016-12-13 19:37:24
● 2017-10-07 23:50:18
○ 2026-03-03 13:23:56
○ 2026-03-27 00:25:34
●A2404:c6c0::552026-03-03 → 2026-03-27 · 3 obs
○ 2017-10-07 23:50:18
● 2026-03-03 13:23:56
● 2026-03-27 00:25:34

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coml.gtld-servers.net, h.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
osstax.comns1.matbao.com, ns2.matbao.com4 records

✅ Authoritative Response

Server:103.138.89.11

NS records: ns1.matbao.com, ns2.matbao.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for osstax.com (unsigned zone)

⏱️ Timing

Total: 785ms | Queries: -

📄 Records

TypeCountSample Data
A1103.138.88.55
AAAA12404:c6c0::55
NS2ns1.matbao.vn, ns2.matbao.vn
MX1pro01.emailserver.vn (pri: 0)
TXT2MS=ms36711640, v=spf1 mx include:emailserver.vn include
SOA1ns1.matbao.vn admin.matbao.com

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.matbao.com, ns1.matbao.com, ns2.matbao.com...)

Analysis

IP Addresses

osstax.com points to two IP numbers: 2404:c6c0::55 and 103.138.88.55.

Other host names, for instance acquy-rocket.com, mayphatdientanthanhtai.com, www.mayphatdientanthanhtai.com, vietaudio.net and anhlinhthanhmau.vn share IP numbers with osstax.com.

Name Servers

osstax.com is delegated to four name servers: ns1.matbao.com, ns2.matbao.com, ns1.matbao.vn and ns2.matbao.vn.

osstax.com at least partially shares its name servers with other domains, for instance anphuthinh.com, gioitiengtrung.vn, thanhdatplastic.com, hasa.com.vn and gameclub.vn.

these name servers are commonly used with the name servers ns-bak.matbao.com, ns3.matbao.vn, ns4.matbao.vn, ns1.digipowerdns.com and ns2.digipowerdns.com.

Hostnames with two IPs:

The host name ns1.matbao.com points to: 13.250.228.99 and 103.110.128.60

The host name ns2.matbao.com points to: 35.198.203.127 and 103.138.89.11

The host name ns1.matbao.vn points to: 13.250.228.99 and 103.110.128.60

The host name ns2.matbao.vn points to: 35.198.203.127 and 103.138.89.11

Hostnames that point to 13.250.228.99 : ns1.matbao.com and ns1.matbao.vn

Hostnames that point to 103.110.128.60 : ns1.matbao.com and ns1.matbao.vn

Hostnames that point to 35.198.203.127 : ns2.matbao.com and ns2.matbao.vn

Hostnames that point to 103.138.89.11 : ns2.matbao.com and ns2.matbao.vn

Mail Servers

osstax.com is served by a single mail server, pro01.emailserver.vn.

osstax.com uses the same mail server setup as other domains such as h2tech.vn, ifdvn.com, thebestco.vn, dtsilicone.net and khoahocceo.edu.vn.

osstax.com shares at least some mail servers with other domains, for instance dngcorp.vn and ccbm.com.vn.

pro01.emailserver.vn points to IP number 103.110.129.101.