Rank #1,074Updated November 10, 2026
a.co
The site runs on Akamai, Akamai Bot Manager. Its email security grade is A. Its SSL certificate is issued by Amazon and is valid for 193 more days.
- Domain age
- —
- Technologies
- 2
- Email security
- A
- SSL days left
- 193
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 98.87.170.8 | 31 |
| A | 98.87.170.202 | 31 |
| A | 44.215.138.88 | 31 |
| NS | ns-1366.awsdns-42.org | 300 |
| NS | ns-1679.awsdns-17.co.uk | 300 |
| NS | ns-289.awsdns-36.com | 300 |
| NS | ns-579.awsdns-08.net | 300 |
| TXT | v=spf1 -all | 900 |
Technology stack
CDN
Security
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, Amazon RSA 2048 M04, Amazon |
| Expires | May 22, 2027 |
| Days remaining | 193 |
| Protocol | TLSv1.3 |
| Names | www.amz.onl, a.co, amz.onl, www.a.co |
Email security
AScore 97/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
- warnNo MX records: this domain cannot receive email.
- goodSPF record found.
- goodSPF ends with -all: servers you have not listed are rejected (hard fail).
- goodDMARC policy is reject: mail that fails authentication is blocked.
- goodDMARC aggregate reports are sent to mailto:[email protected].
- goodSPF says this domain sends no email, so DKIM signing is not needed.
Homepage metadata
| Indexable | Yes |
|---|---|
| Word count | 0 |
About a.co
What technology does a.co use?
We detected 2 technologies on a.co, including Akamai, Akamai Bot Manager.
Does a.co protect its email with SPF and DMARC?
a.co scores 97/100 (grade A) for email security. No MX records: this domain cannot receive email. SPF record found.
What are the name servers of a.co?
a.co uses ns-1366.awsdns-42.org, ns-1679.awsdns-17.co.uk, ns-289.awsdns-36.com, ns-579.awsdns-08.net.