usertrust.com - dns.ninja
usertrust.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 91.199.212.176🇬🇧 Comodo91.199.212.0/24 Sectigo CA | ||||||
| PTR | www.usertrust.com.212.199.91.in-addr.arpa | ||||||
| NS | ns1.as48447.net ⭐ | ||||||
| A | 2a0e:ac00:c7:d432::5bc7:d432🇬🇧 Comodo2a0e:ac00::/32 | ||||||
| PTR | ns1.as48447.net | ||||||
| A | 91.199.212.50🇬🇧 Comodo91.199.212.0/24 Sectigo CA | ||||||
| PTR | ns1.as48447.net | ||||||
| NS | ns2.as48447.net | ||||||
| A | 2a0e:ac00:d1:c432::5bd1:c432🇬🇧 Comodo2a0e:ac00::/32 | ||||||
| A | 91.209.196.50🇬🇧 Comodo91.209.196.0/24 Sectigo | ||||||
| PTR | ns2.as48447.net | ||||||
| NS | ns3.as48447.net | ||||||
| A | 2a0e:ac00:d4:c32::5bd4:c32🇬🇧 Comodo2a0e:ac00::/32 | ||||||
| A | 91.212.12.50🇬🇧 Comodo91.212.12.0/24 Sectigo | ||||||
| PTR | ns3.as48447.net | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns1.as48447.nethostmaster@comodoca.com 2026-04-13 #1 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1785091202 | ||||||
📈 Tranco rank: #2,918
USERTrust - SSL/TLS Certificate Authority
USERTrust is a brand of root certificates operated by Sectigo (formerly Comodo CA), one of the world's largest commercial Certificate Authorities. The USERTrust root certificates are widely trusted and embedded in browsers, operating systems, and devices worldwide.
Key Facts
- Owner: Sectigo Limited (acquired from Comodo Group)
- Purpose: Issues SSL/TLS certificates through the USERTrust RSA and ECC root certificate hierarchies
- Trust: USERTrust roots are included in major trust stores (Microsoft, Apple, Mozilla, Google)
- Tranco Rank: #2,422 globally
Infrastructure
| Type | Details |
|---|---|
| IP Address | 91.199.212.176 (UK) |
| IPv6 | 2a0e:ac00:c7:d432::5bc7:d432 |
| Nameservers | ns1/ns2/ns3.as48447.net (Sectigo infrastructure) |
SPF configured to reject all mail (v=spf1 -all) | |
| DNSSEC | Not signed |
Certificate Hierarchy
The USERTrust root certificates serve as trust anchors for millions of SSL/TLS certificates issued by Sectigo and its resellers. Common root certificates include:
- USERTrust RSA Certification Authority - 4096-bit RSA root
- USERTrust ECC Certification Authority - Elliptic curve root
Related Domains
The domain shares infrastructure with other Sectigo properties including comodoca.org, trustlogo.com, and identityinfrastructure.net.
Subdomains
www.usertrust.com |
cps.usertrust.com |
crl.usertrust.com |
mail.usertrust.com |
ocsp.usertrust.com |
mail2.usertrust.com |
crt.usertrust.com |
Same first word
usertrust.eu |
usertrust.co.at |
usertrust.ch |
usertrust.com |
usertrust.cn |
usertrust.cz |
usertrust.co.uk |
usertrust.at |
usertrust.info |
Similar names
suretrust.us |
suretrust.github.io |
trustuser.com |
trustsure.com |
trustsure.co.uk |
suretrust.net |
trustuser.net |
suretrust.com |
suretrust.org |
suretrust.com.pk |
suretrust.biz |
DNS History
10 records (4 active, 6 former)
○NSns0.comododns.com2015-08-24 → 2019-08-21 · 6 obs
● 2018-12-05 13:45:36
○ 2019-02-07 04:55:22
● 2019-08-21 04:36:54
○ 2020-01-15 05:09:00
○ 2026-07-26 18:50:16
○NSns0.comododns.net2015-08-24 → 2018-12-05 · 4 obs
● 2018-12-05 13:45:36
○ 2019-02-07 04:55:22
○ 2026-07-26 18:50:16
●NSns1.as48447.net2019-02-07 → 2026-07-26 · 3 obs
● 2019-02-07 04:55:22
● 2026-07-26 18:50:16
○NSns1.comododns.com2015-08-24 → 2018-12-05 · 4 obs
● 2018-12-05 13:45:36
○ 2019-02-07 04:55:22
○ 2026-07-26 18:50:16
○NSns1.comododns.net2015-08-24 → 2018-12-05 · 4 obs
● 2018-12-05 13:45:36
○ 2019-02-07 04:55:22
○ 2026-07-26 18:50:16
●NSns2.as48447.net2019-02-07 → 2026-07-26 · 3 obs
● 2019-02-07 04:55:22
● 2026-07-26 18:50:16
●NSns3.as48447.net2019-02-07 → 2026-07-26 · 3 obs
● 2019-02-07 04:55:22
● 2026-07-26 18:50:16
○MXsgmail.comodogroup.com2015-08-24 → 2018-12-05 · 4 obs
● 2018-12-05 13:45:36
○ 2019-02-07 04:55:22
○ 2026-07-26 18:50:16
○A216.126.201.892015-08-24 → 2018-12-05 · 4 obs
● 2018-12-05 13:45:36
○ 2019-02-07 04:55:22
○ 2026-07-26 18:50:16
●A91.199.212.1762019-02-07 → 2026-07-26 · 3 obs
● 2019-02-07 04:55:22
● 2026-07-26 18:50:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| usertrust.com | ns1.as48447.net, ns2.as48447.net, ns3.as48447.net | - |
✅ Authoritative Response
Server:91.212.12.50
NS records: ns1.as48447.net, ns2.as48447.net, ns3.as48447.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for usertrust.com (unsigned zone)
⏱️ Timing
Total: 362ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 91.199.212.176 |
| NS | 3 | ns2.as48447.net, ns3.as48447.net... |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns1.as48447.net hostmaster.comodoca.com |
Analysis
Hierarchy
Among the subdomains of usertrust.com are www.usertrust.com, cps.usertrust.com, crl.usertrust.com, mail.usertrust.com, ocsp.usertrust.com and a few other host names.
IP Addresses
usertrust.com resolves to just one IP address, 91.199.212.176.
Two other host names, along with comodoca.org, www.comodo.info and idauthority.info, also share IP numbers with usertrust.com.
Name Servers
The authoritative name servers for usertrust.com are ns1.as48447.net, ns2.as48447.net and ns3.as48447.net — three in total.
There is at least partial name server overlap between usertrust.com and other domains — xolphin.eu, optimumssl.net, xolphin.it and two more among them.
The name servers ns1.sectigodns.com, ns2.sectigodns.com and ns3.sectigodns.com are often found in combination with these name servers.
ns1.as48447.net, ns2.as48447.net and ns3.as48447.net all resolve to exactly two IP numbers apiece: ns1.as48447.net → 91.199.212.50 and 2a0e:ac00:c7:d432::5bc7:d432; ns2.as48447.net → 91.209.196.50 and 2a0e:ac00:d1:c432::5bd1:c432; ns3.as48447.net → 91.212.12.50 and 2a0e:ac00:d4:c32::5bd4:c32.