backend21.com - robtex.com
backend21.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::ac43:894a🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3032::6815:5925🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.89.37Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.137.74🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | itzel.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::a29f:262a🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | itzel.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c22a🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | itzel.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:222a🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | itzel.ns.cloudflare.com | ||||||
| A | 108.162.194.42🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | itzel.ns.cloudflare.com | ||||||
| A | 162.159.38.42Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | itzel.ns.cloudflare.com | ||||||
| A | 172.64.34.42🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | itzel.ns.cloudflare.com | ||||||
| NS | jeremy.ns.cloudflare.com | ||||||
| A | 2606:4700:58::adf5:3bb4🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jeremy.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c1b4🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | jeremy.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:21b4🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | jeremy.ns.cloudflare.com | ||||||
| A | 108.162.193.180🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jeremy.ns.cloudflare.com | ||||||
| A | 172.64.33.180🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jeremy.ns.cloudflare.com | ||||||
| A | 173.245.59.180🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jeremy.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.89.37, 172.67.137.74 | ||||||
| IPv6 hints | 2606:4700:3030::ac43:894a, 2606:4700:3032::6815:5925 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=56, name=cloudflare-ech.com | ||||||
| SOA | itzel.ns.cloudflare.comdns@cloudflare.com serial=2403162426 | ||||||
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=1778417521 | ||||||
Same first word
backend21.com |
DNS History
6 records (6 active, 0 former)
●NSitzel.ns.cloudflare.com2026-03-26 → 2026-05-10 · 2 obs
● 2026-05-10 12:52:38
●NSjeremy.ns.cloudflare.com2026-03-26 → 2026-05-10 · 2 obs
● 2026-05-10 12:52:38
●A104.21.89.372026-03-26 → 2026-05-10 · 2 obs
● 2026-05-10 12:52:38
●A172.67.137.742026-03-26 → 2026-05-10 · 2 obs
● 2026-05-10 12:52:38
●A2606:4700:3030::ac43:894a2026-03-26 → 2026-05-10 · 2 obs
● 2026-05-10 12:52:38
●A2606:4700:3032::6815:59252026-03-26 → 2026-05-10 · 2 obs
● 2026-05-10 12:52:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | m.gtld-servers.net, h.gtld-servers.net, f.gtld-servers.net, c.gtld-servers.net... | - |
| backend21.com | jeremy.ns.cloudflare.com, itzel.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:108.162.194.42
NS records: jeremy.ns.cloudflare.com, itzel.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for backend21.com (unsigned zone)
⏱️ Timing
Total: 202ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.89.37, 172.67.137.74 |
| AAAA | 2 | 2606:4700:3030::ac43:894a, 2606:4700:3032::6815:5925 |
| NS | 2 | itzel.ns.cloudflare.com, jeremy.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | itzel.ns.cloudflare.com dns.cloudflare.c |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (jeremy.ns.cloudflare.com, jeremy.ns.cloudflare.com, jeremy.ns.cloudflare.com...)
Analysis
IP Addresses
backend21.com maps to four IP numbers: 2606:4700:3030::ac43:894a, 2606:4700:3032::6815:5925, 104.21.89.37 and 172.67.137.74.
Other host names, for instance purecover.co.uk, thethinkinghut.com, svlawassociates.com, nabajivannepal.org.np and australianperlite.com share IP numbers with backend21.com.
Name Servers
Two name servers itzel.ns.cloudflare.com and jeremy.ns.cloudflare.com are delegated to backend21.com.
backend21.com uses the same name server configuration as other domains, such as livepure.com, x-market-list.com, crypmarkethubs.com, stockxref.com and cinema-4u.com.
backend21.com at least partially shares name servers with other domains such as najeb.us, silvergatebank.org, qb0086.com, motchillday.com and mydigitalpeople.com.
These name servers are commonly used with rory.ns.cloudflare.com, joyce.ns.cloudflare.com, ed.ns.cloudflare.com and jason.ns.cloudflare.com.
Host names with six IP numbers: Host name itzel.ns.cloudflare.com points to 2606:4700:50::a29f:262a, 2803:f800:50::6ca2:c22a, 2a06:98c1:50::ac40:222a, 108.162.194.42, 162.159.38.42 and 172.64.34.42; host name jeremy.ns.cloudflare.com points to 2606:4700:58::adf5:3bb4, 2803:f800:50::6ca2:c1b4, 2a06:98c1:50::ac40:21b4, 108.162.193.180, 172.64.33.180 and 173.245.59.180.