DNS Record Lookup

Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain

a1.rs

DNS Records

WhoisRDAPDNS RecordsCertificateUptimeDiagnosticsHistoryHide Contact Info

Hosting & Network

a1.rs runs on AS44143, with email via Microsoft 365.

Hosting network
AS44143AS44143
Managed DNS
Self-hosted / other
Email
Microsoft 365
IPv6 (AAAA)
Enabled
CAA pinning
None

Sits alongside 3 other sites on AS44143. Stable here since we started watching (Aug 12, 2026).

The apex and www are the same hosting — the apex via A records, www via a CNAME to a1.rs.

DNS Records for a1.rs

HostnameTypeTTLPriorityContent
a1.rsA077.243.16.127
a1.rsSOA43200ns.mtel.net sysadmin.mtel.net 2026101201 3600 900 1209600 43200
a1.rsMX010a1-rs.mail.protection.outlook.com
a1.rsAAAA02a00:61c0:1:299::a
a1.rsNS0ns2.mtel.net
a1.rsNS0ns.mtel.net
a1.rsTXT0jd6fj7t8ym2l9np6l5hltkx12hnlxycn
a1.rsTXT0cloudflare-verify.a1.rs946872627-483739186
a1.rsTXT0workplace-domain-verification=wsWMkpDasWyrn6jXnHYuQAzvx0LndN
a1.rsTXT0offensity-domain-verification=ea4f4db23726a083287eb3d6b69f99d4f5bb7941f0339ffb9830dc97ef7a36b3
a1.rsTXT0HTmfawGNI3oj5kqKPnRcAWBuftFS5VTAKzmJJjQZuQoRf/urXi7beYUcr34tdRfoM4G+h7fVoO40RSWvCpFWow==
a1.rsTXT0_8y4lwktzig92uw5xctnrn3pqhdt0qpw
a1.rsTXT06zr8r4btbkqnj3q9mtfztk1ylwhlhxcy
a1.rsTXT0atlassian-domain-verification=qny8wsWb8GSm72AV8ckn86KrWSeA/PfXwsqed/nlAujWrEN9OYISSiR1C6f0f9P2
a1.rsTXT0MS=ms74056046
a1.rsTXT0Dh+GYM/2MRsxh3F3FyCKN/KJyLic/cwkKt+vM5dQHVq9MCRLyJC8ZCWJN0fSrqmMP2nlEQNIA5W8YAQqaPYFdw==
a1.rsTXT0v=spf1 include:spf1.a1.rs include:spf2.a1.rs -all
a1.rsTXT0ibmid=0a9aed9e-a2db-47a8-a70f-d0743e09b42a
www.a1.rsNS0ns.mtel.net
www.a1.rsNS0ns2.mtel.net
www.a1.rsSOA43200ns.mtel.net sysadmin.mtel.net 2026101201 3600 900 1209600 43200
www.a1.rsAAAA02a00:61c0:1:299::a
www.a1.rsA077.243.16.127
www.a1.rsMX010a1-rs.mail.protection.outlook.com
www.a1.rsCNAME0a1.rs
www.a1.rsTXT0HTmfawGNI3oj5kqKPnRcAWBuftFS5VTAKzmJJjQZuQoRf/urXi7beYUcr34tdRfoM4G+h7fVoO40RSWvCpFWow==
www.a1.rsTXT0ibmid=0a9aed9e-a2db-47a8-a70f-d0743e09b42a
www.a1.rsTXT06zr8r4btbkqnj3q9mtfztk1ylwhlhxcy
www.a1.rsTXT0offensity-domain-verification=ea4f4db23726a083287eb3d6b69f99d4f5bb7941f0339ffb9830dc97ef7a36b3
www.a1.rsTXT0workplace-domain-verification=wsWMkpDasWyrn6jXnHYuQAzvx0LndN
www.a1.rsTXT0cloudflare-verify.a1.rs946872627-483739186
www.a1.rsTXT0jd6fj7t8ym2l9np6l5hltkx12hnlxycn
www.a1.rsTXT0MS=ms74056046
www.a1.rsTXT0v=spf1 include:spf1.a1.rs include:spf2.a1.rs -all
www.a1.rsTXT0Dh+GYM/2MRsxh3F3FyCKN/KJyLic/cwkKt+vM5dQHVq9MCRLyJC8ZCWJN0fSrqmMP2nlEQNIA5W8YAQqaPYFdw==
www.a1.rsTXT0_8y4lwktzig92uw5xctnrn3pqhdt0qpw
www.a1.rsTXT0atlassian-domain-verification=qny8wsWb8GSm72AV8ckn86KrWSeA/PfXwsqed/nlAujWrEN9OYISSiR1C6f0f9P2

Get alerted the moment a1.rs's DNS changes

This page is today's snapshot. Turn on monitoring and we'll watch a1.rs continuously, notifying you the moment anything moves across all three signals:

DNS monitor showing the hosting provider, current A, MX, NS, and TXT records, and a history of MX and TXT changes

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, CNAME, TXT 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.

Monitor DNS free

Free for your first domain: uptime, DNS, and certificate together. No credit card.

What's up with DNS →

Our daily roundup of the most interesting DNS changes across the web — hosting and CDN migrations, network moves, and security-config shifts.

Ask about a1.rs

Beta

Answers use the live DNS records shown on this page. AI-generated — double-check anything important.

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