18
records
IPv4 Addresses
TTL
courseco.co. 300 IN A 185.158.133.1
Name Servers
TTL
courseco.co. 1200 IN NS lady.ns.cloudflare.com. courseco.co. 1200 IN NS woz.ns.cloudflare.com.
Mail Servers
TTL
5m
5m
5m
5m
5m
courseco.co. 300 IN MX 1 aspmx.l.google.com. courseco.co. 300 IN MX 5 alt2.aspmx.l.google.com. courseco.co. 300 IN MX 5 alt1.aspmx.l.google.com. courseco.co. 300 IN MX 10 alt3.aspmx.l.google.com. courseco.co. 300 IN MX 10 alt4.aspmx.l.google.com.
SOA Details
TTL
20m
SOA
Responsible
dns.cloudflare.com
SOA
Serial
2413740001
SOA
Times
Refresh
2h
Retry
40m
Expire
7d
Minimum TTL
30m
courseco.co. 1200 IN SOA lady.ns.cloudflare.com. dns.cloudflare.com. 2413740001 10000 2400 604800 1800
Certificate Authority Authorization
TTL
No CAA records were returned at this registrable domain name. With no CAA policy, any public certificate authority (CA) may issue TLS certificates for names under this zone unless a parent publishes CAA; add issue / issuewild / iodef records to restrict issuance.
DMARC
TTL
DMARC
Policy
Organizational policy (p): how receivers treat mail that fails aligned DMARC checks — none (monitor only), quarantine (often junk), or reject (block).
none
quarantine
reject
5m
DMARC
Subdomain Policy
Subdomain policy (sp): when set, it applies to hostnames below this domain instead of p; if omitted, subdomains inherit the organizational policy.
none
quarantine
reject
DMARC
Percentage
pct: share of mail that gets quarantine/reject; 100 = all failing messages (default).
100
DMARC
RUA
mailto:[email protected]
Aggregate DMARC reports (ZIP/XML). Optional but recommended for visibility.
DMARC
RUF
Forensic (per-failure) reports. Often omitted for privacy or volume.
No forensic report URIs (RUF).
courseco.co. 300 IN DMARC v=DMARC1; p=none; sp=none; rua=mailto:[email protected]; rf=afrf; pct=100; ri=604800
DKIM
TTL
DKIM
Selector
google
v=DKIM1
k=rsa
5m
Public Key
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqBN4Rq9t3i17...
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqBN4Rq9t3i17UbcpIcoGAWdGt3wfPpimMlsIGi7hryVLKVQpdjRnrWscBGdhBI+V9y2FAPT31laDUWSNXEpo8Q/d7xbWa5bh/FEc3uboFUailepac0aWsEsiVmafLH9CmPOgd2uwUdnitO6TVaztTN8zdBTkZFqX1r65zOkCG3pv/qQFC/k8HAW8X6ns8pktKR55sw2Xl+LtZF4/bIeXyIkMDxQnyxHXed1Lo+C7Ml0xfg2bz0dQTpjaVClM+7xj4ylagFW0nbIAHHKq/gg0w1KTv5wCnkBluRHH71B+0Y0HXpyQZlDj/zpeU1jN1gN7y4JMfXAj3zkYJBatFuaYAwIDAQAB
DKIM
Selector
default
v=DKIM1
k=rsa
5m
Public Key
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1rEkz3MIE5eO...
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1rEkz3MIE5eOMRPEnCMp79ScQzzFtVVqLMcVqsgq6mYRcCnXAlVkTFEnKnvOjbkaB4bBcrYLYzw57vDb6OIBgVGZNorU8bbkE49unCwGcaxod/noVTPOSyKKVAQBcat5JXC/GI9RdLGhTUYtF7P/wswDv3qshkEflKNMPOhZcBOdPK8es7pFXg7+o383MrOdTZb7Otin8Y4GwwBa4XUN4d6a2SpwYRDMRYSTqXeEDhDupFyjGWe4SDqIA78RarqfaLiimfHxGFv28l+0/URuyZkyG03M3VtcLwNKajhcS70YKt1tCEZp+N0mewNHSdEHAuQWgqAd4mpVr0RdQC5ZzQIDAQAB
DKIM
Selector
mlsend
v=DKIM1
5m
Public Key
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDWIaZIHMdNFu0LeDyM...
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDWIaZIHMdNFu0LeDyMe4r6xfkG9mIyywfnrnx/lfmhMWgmHqRez9Ra4H9NcHoMVYoHHxK18QvjPu0TAGTiO6JRXyM8AX7RjVqF50IaKuquqePZJFkBhLrdsPKN/pz3BYDjgyqGnsgTF42vYunRPsGZRym4eXlskdn47h8F6IRPBQIDAQAB
courseco.co. 300 IN DKIM v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqBN4Rq9t3i17UbcpIcoGAWdGt3wfPpimMlsIGi7hryVLKVQpdjRnrWscBGdhBI+V9y2FAPT31laDUWSNXEpo8Q/d7xbWa5bh/FEc3uboFUailepac0aWsEsiVmafLH9CmPOgd2uwUdnitO6TVaztTN8zdBTkZFqX1r65zOkCG3pv/qQFC/k8HAW8X6ns8pktKR55sw2Xl+LtZF4/bIeXyIkMDxQnyxHXed1Lo+C7Ml0xfg2bz0dQTpjaVClM+7xj4ylagFW0nbIAHHKq/gg0w1KTv5wCnkBluRHH71B+0Y0HXpyQZlDj/zpeU1jN1gN7y4JMfXAj3zkYJBatFuaYAwIDAQAB courseco.co. 300 IN DKIM v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1rEkz3MIE5eOMRPEnCMp79ScQzzFtVVqLMcVqsgq6mYRcCnXAlVkTFEnKnvOjbkaB4bBcrYLYzw57vDb6OIBgVGZNorU8bbkE49unCwGcaxod/noVTPOSyKKVAQBcat5JXC/GI9RdLGhTUYtF7P/wswDv3qshkEflKNMPOhZcBOdPK8es7pFXg7+o383MrOdTZb7Otin8Y4GwwBa4XUN4d6a2SpwYRDMRYSTqXeEDhDupFyjGWe4SDqIA78RarqfaLiimfHxGFv28l+0/URuyZkyG03M3VtcLwNKajhcS70YKt1tCEZp+N0mewNHSdEHAuQWgqAd4mpVr0RdQC5ZzQIDAQAB; courseco.co. 300 IN DKIM v=DKIM1;t=s;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDWIaZIHMdNFu0LeDyMe4r6xfkG9mIyywfnrnx/lfmhMWgmHqRez9Ra4H9NcHoMVYoHHxK18QvjPu0TAGTiO6JRXyM8AX7RjVqF50IaKuquqePZJFkBhLrdsPKN/pz3BYDjgyqGnsgTF42vYunRPsGZRym4eXlskdn47h8F6IRPBQIDAQAB
SPF (Sender Policy Framework)
TTL
SPF
SPFv1
| Qualifier | Mechanism | Target / value | Valid | Details |
|---|---|---|---|---|
| + Pass | a |
—
|
|
|
| + Pass | mx |
—
|
|
|
| + Pass | ip4 |
|
||
| + Pass | ip4 |
|
||
| + Pass | ip4 |
|
||
| + Pass | ip4 |
|
||
| + Pass | ip4 |
|
||
| + Pass | ip4 |
|
||
| + Pass | include |
|
||
| + Pass | include |
|
||
| + Pass | include |
|
||
| + Pass | include |
|
||
| ~ Softfail | all |
—
|
|
5m
courseco.co. 300 IN TXT "v=spf1 +a +mx ip4:116.203.201.238 ip4:213.171.220.156 ip4:83.138.8.86 ip4:94.130.79.241 ip4:157.90.28.58 ip4:142.132.160.201 include:_spf.google.com include:servers.outfunnel.com include:spf.mailjet.com include:_spf.mailersend.net ~all"
MTA-STS
TTL
This hostname does not publish an MTA-STS policy (no v=STSv1 TXT at _mta-sts.<name> and/or no policy at https://mta-sts.<name>/.well-known/mta-sts.txt).
Text Content
TTL
atlassian-domain-verification=WyG9gqFJk5QCPUkqo3Y/sS05WDfkDiiHwwf2DjFd/dghUrvuhf6sEv4dbbtRn7C2
5m
google-site-verification=Ck96cib6TKD3dUPiumMDXQkXpWUVVJij9WFBd1G5pBc
5m
google-site-verification=wpImUDJluRogDhBiC8YGhuFzYZbYAeNdLTJCMUexvmQ
5m
sendinblue-code:cc89236635c4b1ad80f72b8d40f0757e
5m
courseco.co. 300 IN TXT "atlassian-domain-verification=WyG9gqFJk5QCPUkqo3Y/sS05WDfkDiiHwwf2DjFd/dghUrvuhf6sEv4dbbtRn7C2" courseco.co. 300 IN TXT "google-site-verification=Ck96cib6TKD3dUPiumMDXQkXpWUVVJij9WFBd1G5pBc" courseco.co. 300 IN TXT "google-site-verification=wpImUDJluRogDhBiC8YGhuFzYZbYAeNdLTJCMUexvmQ" courseco.co. 300 IN TXT "sendinblue-code:cc89236635c4b1ad80f72b8d40f0757e"