Domains DNS servers IPs

Learning DNS for Developers

Company About Press Contact Follow me on 𝕏

Search

Ctrl + K

Domains DNS servers IPs

Learning DNS for Developers

Company About Press Contact Follow me on 𝕏

All

Domains

IPs

Tools

amazon.com 216.73.216.152 Your IP DNS Lookup DNS Propagation Checker SPF Record Lookup A Record Lookup AAAA Record Lookup CNAME Record Lookup TXT Record Lookup MX Record Lookup

Navigate

Open

- DNS
  - Records
    
    All common record types IP addresses
    
    A AAAA AFSDB APL AXFR CAA CDNSKEY CDS CERT CNAME CSYNC DHCID DLV DNAME DNSKEY DS EUI48 EUI64 HINFO HIP HTTPS IPSECKEY IXFR KEY KX LOC MX NAPTR NS NSEC3 NSEC3PARAM NSEC NXT OPENPGPKEY OPT PTR RP RRSIG SIG SMIMEA SOA SPF SSHFP SVCB SRV TA TKEY TLSA TSIG TXT URI ZONEMD
    
    OPT records
  - Propagation
  - Trace
  - Zone transfer
    
    Full zone transfer Incremental zone transfer
- Email

spf-mailrouting.isc.upenn.edu OPT records

Queried just now

No OPT records No OPT records found for spf-mailrouting.isc.upenn.edu.

Check propagation