v-contractor.com - robtex.com
v-contractor.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 115.79.5.211🇻🇳 VIETEL-AS-AP115.79.4.0/22 Proxy-registered route object | ||||||
| NS | nsbak.dotvndns.com ⭐ | ||||||
| A | 2406:9c80::9000:302🇻🇳 SUPERDATA2406:9c80::/48 -VN | ||||||
| PTR | nsbak.dotvndns.com | ||||||
| A | 112.213.89.22🇻🇳 SUPERDATA112.213.89.0/24 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 | ||||||
| PTR | ns8922.dotvndns.vn | ||||||
| NS | ns1.dotvndns.vn | ||||||
| A | 2406:9c80::66🇻🇳 SUPERDATA2406:9c80::/48 -VN | ||||||
| PTR | ns1.dotvndns.vn | ||||||
| A | 112.213.89.3🇻🇳 SUPERDATA112.213.89.0/24 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 | ||||||
| PTR | ns1.dotvndns.vn | ||||||
| NS | ns2.dotvndns.vn | ||||||
| A | 2406:9c80::9000:111🇻🇳 SUPERDATA2406:9c80::/48 -VN | ||||||
| PTR | ns2.dotvndns.vn | ||||||
| A | 222.255.121.247🇻🇳 VDC222.255.121.0/24 VNPT | ||||||
| PTR | static.vdc.vn | ||||||
| PTR | static.vnpt.vn | ||||||
| MX | mx.viettelidc.com.vn ⭐ | ||||||
| A | 103.1.208.155🇻🇳 VTDC-AS-VN103.1.208.0/22 Proxy-registered route object | ||||||
| PTR | hl-smtp01.viettelidc.com.vn | ||||||
| A | 103.1.208.156🇻🇳 VTDC-AS-VN103.1.208.0/22 Proxy-registered route object | ||||||
| PTR | hl-smtp02.viettelidc.com.vn | ||||||
| TXT | v=spf1 ip4:103.1.208.0/24 a mx -all | ||||||
| SOA | nsbak.dotvndns.comhostmaster@v-contractor.com 2025-09-30 #8 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1777005416 | ||||||
Subdomains
mail.v-contractor.com |
DNS History
9 records (5 active, 4 former)
●NSns1.dotvndns.vn2026-04-24 → 2026-04-24 · 3 obs
● 2026-04-24 04:38:28
● 2026-04-24 04:38:30
●NSns2.dotvndns.vn2026-04-24 → 2026-04-24 · 3 obs
● 2026-04-24 04:38:28
● 2026-04-24 04:38:30
○NSns723.websitewelcome.com2015-06-16 → 2018-06-14 · 4 obs
● 2018-06-14 13:56:18
○ 2026-04-24 04:38:28
○ 2026-04-24 04:38:30
○NSns724.websitewelcome.com2015-06-16 → 2018-06-14 · 4 obs
● 2018-06-14 13:56:18
○ 2026-04-24 04:38:28
○ 2026-04-24 04:38:30
●NSnsbak.dotvndns.com2026-04-24 → 2026-04-24 · 3 obs
● 2026-04-24 04:38:28
● 2026-04-24 04:38:30
○MXmail.v-contractor.com2015-06-16 → 2018-06-14 · 4 obs
● 2018-06-14 13:56:18
○ 2026-04-24 04:38:28
○ 2026-04-24 04:38:30
●MXmx.viettelidc.com.vn2026-04-24 → 2026-04-24 · 3 obs
● 2026-04-24 04:38:28
● 2026-04-24 04:38:30
●A115.79.5.2112026-04-24 → 2026-04-24 · 3 obs
● 2026-04-24 04:38:28
● 2026-04-24 04:38:30
○A115.84.182.32015-06-16 → 2018-06-14 · 4 obs
● 2018-06-14 13:56:18
○ 2026-04-24 04:38:28
○ 2026-04-24 04:38:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | d.gtld-servers.net, i.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net... | - |
| v-contractor.com | nsbak.dotvndns.com, ns1.dotvndns.vn, ns2.dotvndns.vn | 2 records |
✅ Authoritative Response
Server:222.255.121.247
NS records: nsbak.dotvndns.com, ns1.dotvndns.vn, ns2.dotvndns.vn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for v-contractor.com (unsigned zone)
⏱️ Timing
Total: 1500ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 115.79.5.211 |
| NS | 3 | nsbak.dotvndns.com, ns2.dotvndns.vn... |
| MX | 1 | mx.viettelidc.com.vn (pri: 10) |
| TXT | 1 | v=spf1 ip4:103.1.208.0/24 a mx -all |
| SOA | 1 | nsbak.dotvndns.com hostmaster.v-contract |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (nsbak.dotvndns.com, nsbak.dotvndns.com)
Analysis
Hierarchy
The parent of mail.v-contractor.com is v-contractor.com.
IP Addresses
v-contractor.com points to a single IP: 115.79.5.211.
Name Servers
v-contractor.com is delegated to three name servers: nsbak.dotvndns.com, ns1.dotvndns.vn and ns2.dotvndns.vn.
v-contractor.com partially shares name servers with other domains; examples include ipplus.org, namanhgroup.com, ngohanwire.com, greencommunitygarden.com and admeditec.vn.
These name servers are commonly paired with ns1.pavietnam.vn, ns2.pavietnam.vn, ns3.dotvndns.vn, nsbak.pavietnam.net, dnssecbak.pavietnam.net, dnssec1.pavietnam.vn and dnssec2.pavietnam.vn.
Host names with two IP numbers:
nsbak.dotvndns.com points to 2406:9c80::9000:302 and 112.213.89.22.
ns1.dotvndns.vn points to 2406:9c80::66 and 112.213.89.3.
ns2.dotvndns.vn points to 2406:9c80::9000:111 and 222.255.121.247.
Mail Servers
v-contractor.com is handled by a single mail server, mx.viettelidc.com.vn.
v-contractor.com has the same mail server setup as other domains, including kimteco.vn, newworldvn.com, wacoal.com.vn, epacific.vn and ximanghoangthach.com.
v-contractor.com shares some mail servers with other domains, at least partially, such as congtrinhviettel.com.vn, dawaco.com.vn, gic.vn, biofarm.com.vn and star-blinds.com.
Host mx.viettelidc.com.vn resolves to two IPs: 103.1.208.155 and 103.1.208.156.