DNS Spy
Connectivity: 100%
The following nameservers are available and responding correctly for DNS queries for your domain vnclc.vn.
| Nameserver | IP address(es) | SOA serial |
|---|---|---|
| ns.viettelidc.com.vn. |
115.84.177.8
2401:5f80:2000:1::5 |
1746759307 |
| ns1.viettelidc.com.vn. |
115.84.177.33
2401:5f80:2000:2::4 |
1746759307 |
| ns2.viettelidc.com.vn. |
115.84.181.10
2401:5f80:4000:1::4 |
1746759307 |
Good news, no warnings or errors were found.
We could not find any recommendations at this time.
Good news, we detected the following achievements in your DNS configuration. Each of these checks has increased your DNS Spy score.
- All nameservers reply with the same SOA serial number.
- The nameserver IPs are distributed across multiple subnets.
- All nameservers are online.
- Nameservers are available over IPv4.
- Nameservers are available over IPv6.
Performance: 100%
We tested each nameserver and measured the following response times.
| Nameserver | IP address(es) | Response time |
|---|---|---|
| ns.viettelidc.com.vn. |
115.84.177.8
2401:5f80:2000:1::5 |
1ms
1ms |
| ns1.viettelidc.com.vn. |
115.84.177.33
2401:5f80:2000:2::4 |
1ms
1ms |
| ns2.viettelidc.com.vn. |
115.84.181.10
2401:5f80:4000:1::4 |
1ms
1ms |
Good news, no warnings or errors were found.
We could not find any recommendations at this time.
Good news, we detected the following achievements in your DNS configuration. Each of these checks has increased your DNS Spy score.
- Nameserver ns.viettelidc.com.vn. (115.84.177.8) replied quickly (< 50ms).
- Nameserver ns.viettelidc.com.vn. (2401:5f80:2000:1::5) replied in a reasonable time.
- Nameserver ns1.viettelidc.com.vn. (115.84.177.33) replied quickly (< 50ms).
- Nameserver ns1.viettelidc.com.vn. (2401:5f80:2000:2::4) replied in a reasonable time.
- Nameserver ns2.viettelidc.com.vn. (115.84.181.10) replied quickly (< 50ms).
- Nameserver ns2.viettelidc.com.vn. (2401:5f80:4000:1::4) replied in a reasonable time.
Resilience & Security: 20%
These are the locations and providers of your nameservers.
| Nameserver | Location | ISP |
|---|---|---|
| ns.viettelidc.com.vn. |
IPv4: VN
IPv6: VN |
AS38731 - VTDC-AS-VN Vietel - CHT Compamy Ltd, VN
AS38731 - VTDC-AS-VN Vietel - CHT Compamy Ltd, VN |
| ns1.viettelidc.com.vn. |
IPv4: VN
IPv6: VN |
AS38731 - VTDC-AS-VN Vietel - CHT Compamy Ltd, VN
AS38731 - VTDC-AS-VN Vietel - CHT Compamy Ltd, VN |
| ns2.viettelidc.com.vn. |
IPv4: VN
IPv6: VN |
AS38731 - VTDC-AS-VN Vietel - CHT Compamy Ltd, VN
AS38731 - VTDC-AS-VN Vietel - CHT Compamy Ltd, VN |
We detected the following errors or warnings about your DNS configuration. These caused your DNS rating to be lowered. Resolving these will grant a higher DNS Spy rating for your domain.
- All IPv4 nameservers are hosted by the same provider (AS38731 - VTDC-AS-VN Vietel - CHT Compamy Ltd, VN). Consider spreading the nameservers across multiple DNS providers for increased redundancy.
- All IPv6 nameservers are hosted by the same provider (AS38731 - VTDC-AS-VN Vietel - CHT Compamy Ltd, VN). Consider spreading the nameservers across multiple DNS providers for increased redundancy.
- No DNSSEC records found. Consider enabling DNSSEC, as it provides a way to validate DNS responses for data integrity.
- All the nameservers are being operated from a single domain (viettelidc.com.vn). If that domain gets compromised or goes offline, the DNS will be unavailable. Consider spreading the nameservers across multiple domains.
We detected some possible recommendations for you to consider. No penalties were given for these, but resolving them can give you a higher DNS score.
- All IPv4 nameservers appear to be hosted in the same country (VN). You might want to consider spreading the nameservers geographically.
- All IPv6 nameservers appear to be hosted in the same country (VN). You might want to consider spreading the nameservers geographically.
- No CAA records found. Consider adding CAA records, as it adds increased security by limiting which Certificate Authorities can issue certificates for this domain. (more info)
Good news, we detected the following achievements in your DNS configuration. Each of these checks has increased your DNS Spy score.
- You have more than 1 nameserver.
DNS records: 75%
Our scans detected the following publicly available DNS records.
| Record | TTL | Value | |
|---|---|---|---|
| MX | vnclc.vn | 360s | 10 mail.vnclc.vn. |
| NS | vnclc.vn | 360s |
ns.viettelidc.com.vn. ns1.viettelidc.com.vn. ns2.viettelidc.com.vn. |
| SOA | vnclc.vn | 2560s | ns.viettelidc.com.vn. hostmaster.vnclc.vn. 1746759007 16384 2048 1048576 2560 |
| TXT | vnclc.vn | 360s | "v=spf1 a:vnclc.vn a:mail.vnclc.vn a:smtp.vnclc.vn a:pop3.vnclc.vn ip4:118.163.86.39/24 ip4:59.124.11.45/24 ip4:203.73.70.111/24 ip4:118.163.85.48/24 ip4:118.163.57.24/24 include:_spf.google.com ~all" |
| A | mail.vnclc.vn | 360s | 59.124.11.43 |
| A | pop3.vnclc.vn | 360s | 59.124.11.43 |
| A | smtp.vnclc.vn | 360s | 59.124.11.43 |
We detected the following errors or warnings about your DNS configuration. These caused your DNS rating to be lowered. Resolving these will grant a higher DNS Spy rating for your domain.
- We only detected 1 MX record. Multiple MX records (or multiple IPs behind the MX record) provide redundancy and a more robust e-mail setup.
- Consider giving the MX record for "vnclc.vn" a longer TTL, as those don't change often (1h+).
- Consider giving the NS records for "vnclc.vn" a longer TTL, as those don't change often (1h+).
We detected some possible recommendations for you to consider. No penalties were given for these, but resolving them can give you a higher DNS score.
- No DMARC records have been found. Consider configuring DMARC for improved e-mail authentication.
- No DNS record found on your zone apex (vnclc.vn). Consider adding a DNS record for "vnclc.vn" as an A record.
- No IPv6 record has been found on the zone apex (vnclc.vn). Consider enabling IPv6 in the infrastructure by adding an AAAA record on this domain.
Good news, we detected the following achievements in your DNS configuration. Each of these checks has increased your DNS Spy score.
- Your SOA serial number follows the best practice YYYYMMDDxx format.
- SPF records have been found.
- SPF records are set up restrictively.
- The active nameservers match the NS records.
- The DNS records appear to be RFC compliant.
Have a look at other public DNS scans.