DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
opto.com.tw isn’t pointed at a host yet — it has nameservers configured but no A/AAAA records for us to trace to a hosting network.
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DNS Records for opto.com.tw
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| opto.com.tw | MX | 0 | 20 | mx4.opto.com.tw |
| opto.com.tw | MX | 0 | 20 | mx3.opto.com.tw |
| opto.com.tw | MX | 0 | 10 | spam.opto.com.tw |
| opto.com.tw | MX | 0 | 20 | mx2.opto.com.tw |
| opto.com.tw | TXT | 0 | MS=ms35190532 | |
| opto.com.tw | TXT | 0 | v=spf1 ip4:192.72.115.11 ip4:122.147.157.163 ip4:61.222.74.7 ip4:210.61.29.187 ip4:192.72.136.4 ip4:122.147.157.164 ip4:61.222.74.9 ip4:122.147.53.121 ip4:122.147.53.156 ~all | |
| opto.com.tw | TXT | 0 | gXXK7RI46DSMXOZovUzfPgiNHAF/8+iHwalXEJ27RlESobdf/0/J/M/eSq7lycCdrkym4zGrI/n/7CLk1Emjrw== | |
| opto.com.tw | SOA | 300 | ns1-02.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300 | |
| opto.com.tw | NS | 0 | ns2-02.azure-dns.net | |
| opto.com.tw | NS | 0 | ns1-02.azure-dns.com | |
| opto.com.tw | NS | 0 | ns4-02.azure-dns.info | |
| opto.com.tw | NS | 0 | ns3-02.azure-dns.org | |
| www.opto.com.tw | CNAME | 0 | www.savc-vision.com | |
| www.opto.com.tw | A | 0 | 172.105.212.68 |
Get alerted the moment opto.com.tw's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch opto.com.tw continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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About DNS Records
DNS (Domain Name System) records are instructions that provide information about a domain, including its IP addresses, mail servers, and other services. Common record types include:
- SOA (Start of Authority) - Contains administrative information about the zone
- NS (Nameserver) - Specifies authoritative nameservers for the domain
- A (Address) - Maps a domain to an IPv4 address
- AAAA - Maps a domain to an IPv6 address
- CNAME (Canonical Name) - Creates an alias pointing to another domain
- MX (Mail Exchange) - Specifies mail servers for the domain