letsencrypt.org: IP address, DNS records and WHOIS
Live lookup data for letsencrypt.org: the IP addresses it resolves to, the DNS records it publishes, and its registration details. The data below is fetched when this page is built and refreshed daily.
At a glance
DNS records
A
| 35.157.26.135 | TTL 85 |
| 63.176.8.218 | TTL 85 |
AAAA
| 2a05:d014:58f:6200::259 | TTL 98 |
| 2a05:d014:58f:6200::258 | TTL 98 |
CNAME
No public records of this type are currently published.
MX
| aspmx.l.google.com | 1 |
| alt1.aspmx.l.google.com | 5 |
| alt2.aspmx.l.google.com | 5 |
| aspmx2.googlemail.com | 10 |
| aspmx3.googlemail.com | 10 |
NS
| owen.ns.cloudflare.com |
| vera.ns.cloudflare.com |
TXT
| anthropic-domain-verification-eer9ky=uy5e3EOy8j15k1u9UesevyP1N |
| pardot1011011=d160caff32c4415bb46bb82d8c50e5bea7ea1a74f5a149cb96bd952467266044 |
| sending_domain1011011=f98c68e7636a708a1987c7b9da300d64a354041fa41ea2039fbb02bc18c4ed0f |
| v=spf1 include:_spf.google.com ip4:23.178.112.0/24 ip4:64.78.194.68 ip4:64.78.152.132 include:mail.zendesk.com include:_spf.intacct.com -all |
SOA
- Primary nameserver
- owen.ns.cloudflare.com
- Hostmaster
- dns@cloudflare.com
- Serial
- 2419467988
- Refresh
- 10000 s
- Retry
- 2400 s (40 minutes)
- Expire
- 604800 s (7 days)
- Minimum TTL
- 1800 s (30 minutes)
CAA
| 0 issue "amazon.com" |
| 0 issue "letsencrypt.org" |
| 0 issue "pki.goog" |
| 0 issue "sectigo.com" |
| 0 issue "ssl.com" |
| 0 issue "www.digicert.com" |
| 0 issuewild "amazon.com" |
| 0 issuewild "letsencrypt.org" |
| 0 issuewild "pki.goog" |
| 0 issuewild "sectigo.com" |
| 0 issuewild "ssl.com" |
| 0 issuewild "www.digicert.com" |
WHOIS registration data
- Registrar
- Cloudflare, Inc.
- Registered
- Jul 7, 2014
- Expires
- Jul 7, 2027
- Last changed
- Aug 12, 2026
- Status
- client delete prohibited, client transfer prohibited, client update prohibited
- Nameservers
- owen.ns.cloudflare.com, vera.ns.cloudflare.com
- DNSSEC signed
- No
FAQ
letsencrypt.org currently resolves to 35.157.26.135, 63.176.8.218, 2a05:d014:58f:6200::259, 2a05:d014:58f:6200::258. Large sites often publish several addresses and rotate them, so the list can differ between checks and between locations.
letsencrypt.org is registered through Cloudflare, Inc.. The registrant's identity is not published in the public registration record — most owners use a privacy service or the data is redacted.
letsencrypt.org is served by owen.ns.cloudflare.com, vera.ns.cloudflare.com. These are the authoritative nameservers that publish its DNS records.
Run a fresh check
Records change. Run the live tools for an up-to-the-minute answer: