api.letsencrypt.org - dns.ninja

`api.letsencrypt.org`

DNSSEC

⚠️ Not signed

`letsencrypt.org`

	DNSSEC	⚠️ Not signed
	A	2600:1f18:16e:df01::258^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
	A	2600:1f18:16e:df01::259^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
	A	18.208.88.157^{🇺🇸 Amazon18.208.0.0/13 EC2 IAD prefix}
	A	98.84.224.111^{🇺🇸 Amazon98.80.0.0/13 EC2 IAD Prefix}
	NS	`owen.ns.cloudflare.com` ⭐
	NS	`vera.ns.cloudflare.com`
	MX	`aspmx.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽⁵⁾
	MX	`alt2.aspmx.l.google.com`⁽⁵⁾
	MX	`aspmx2.googlemail.com`⁽¹⁰⁾
	MX	`aspmx3.googlemail.com`⁽¹⁰⁾
	TXT	`pardot1011011=d160caff32c4415bb46bb82d8c50e5bea7ea1a74f5a149cb96bd952467266044`
	TXT	`sending_domain1011011=f98c68e7636a708a1987c7b9da300d64a354041fa41ea2039fbb02b...`
	TXT	`v=spf1 include:_spf.google.com ip4:23.178.112.0/24 ip4:66.133.109.36 ip4:64.7...`
	SOA	`owen.ns.cloudflare.com`dns@cloudflare.com serial=2405997205

WOT: SAFE (93/100)
rank #402 globally
rank #48 in the tld

letsencrypt.org

Let's Encrypt is a free, automated, and open Certificate Authority (CA) operated by the Internet Security Research Group (ISRG), providing TLS/SSL certificates to the public at no cost.

Key facts

Owner / operator: Internet Security Research Group (ISRG), a California public-benefit non-profit
TLD:.org— gTLD
Primary purpose: Official website and ACME API host for the Let's Encrypt Certificate Authority
Status: active

History

Year	Event
2013	ISRG incorporated as a non-profit
2014	Let's Encrypt publicly announced; backed by EFF, Mozilla, Cisco, Akamai among others
2015	Public beta launched (December), first free certificates issued at scale
2016	Exited beta; general availability declared (April)
2018	ACME v2 protocol and wildcard certificate support launched
2020	Passed the milestone of 1 billion certificates issued

Notable subdomains or services

acme-v02.api.letsencrypt.org— live ACME v2 API endpoint used by clients (Certbot, acme.sh, etc.) to request and renew certificates
acme-staging-v02.api.letsencrypt.org— staging environment with relaxed rate limits, used for testing ACME integrations
community.letsencrypt.org— Discourse-based public support forum
crt.letsencrypt.org— Certificate Transparency (CT) log infrastructure

Related domains

isrg.org— parent organisation, the Internet Security Research Group
abetterinternet.org— ISRG's broader public-benefit initiative branding

WOT: SAFE (93/100)
📈 Tranco rank: #1,205

Subdomains

staging.api.letsencrypt.org

acme-staging-v02.api.letsencrypt.org

prod.api.letsencrypt.org

acme-v02.api.letsencrypt.org

Same first word

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pai.aero

DNS History

6 records (0 active, 6 former)

○NSa1-16.akam.net2017-01-12 → 2019-09-20 · 4 obs

● 2017-01-12 21:57:36
● 2019-09-20 19:21:20
○ 2026-02-18 19:20:20
○ 2026-06-10 21:29:38

○NSa11-67.akam.net2017-01-12 → 2019-09-20 · 4 obs

● 2017-01-12 21:57:36
● 2019-09-20 19:21:20
○ 2026-02-18 19:20:20
○ 2026-06-10 21:29:38

○NSa14-64.akam.net2017-01-12 → 2019-09-20 · 4 obs

● 2017-01-12 21:57:36
● 2019-09-20 19:21:20
○ 2026-02-18 19:20:20
○ 2026-06-10 21:29:38

○NSa18-65.akam.net2017-01-12 → 2019-09-20 · 4 obs

● 2017-01-12 21:57:36
● 2019-09-20 19:21:20
○ 2026-02-18 19:20:20
○ 2026-06-10 21:29:38

○NSa20-66.akam.net2017-01-12 → 2019-09-20 · 6 obs

● 2017-01-12 21:57:36
● 2018-12-07 16:23:20
○ 2019-08-05 23:24:24
● 2019-09-20 19:21:20
○ 2026-02-18 19:20:20
○ 2026-06-10 21:29:38

○NSa9-67.akam.net2017-01-12 → 2019-09-20 · 4 obs

● 2017-01-12 21:57:36
● 2019-09-20 19:21:20
○ 2026-02-18 19:20:20
○ 2026-06-10 21:29:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
letsencrypt.org	owen.ns.cloudflare.com, vera.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.192.147

NS records: owen.ns.cloudflare.com, vera.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for letsencrypt.org (unsigned zone)

⏱️ Timing

Total: 212ms | Queries: -

📄 Records

Type	Count	Sample Data