7821b.com - robtex.com
7821b.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3033::6815:2a30🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3036::ac43:9c37🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.42.48Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.156.55🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | sima.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::adf5:3ade🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sima.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c0de🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | sima.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:20de🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | sima.ns.cloudflare.com | ||||||
| A | 108.162.192.222🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sima.ns.cloudflare.com | ||||||
| A | 172.64.32.222🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sima.ns.cloudflare.com | ||||||
| A | 173.245.58.222🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sima.ns.cloudflare.com | ||||||
| NS | sterling.ns.cloudflare.com | ||||||
| A | 2606:4700:58::a29f:2c8f🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sterling.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c38f🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | sterling.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:238f🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | sterling.ns.cloudflare.com | ||||||
| A | 108.162.195.143🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sterling.ns.cloudflare.com | ||||||
| A | 162.159.44.143Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sterling.ns.cloudflare.com | ||||||
| A | 172.64.35.143🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sterling.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 | 104.21.42.48, 172.67.156.55 | ||||||
| IPv6 | 2606:4700:3033::6815:2a30, 2606:4700:3036::ac43:9c37 | ||||||
| SOA | sima.ns.cloudflare.comdns@cloudflare.com serial=2396348756 | ||||||
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=1771291435 | ||||||
Similar names
DNS History
6 records (6 active, 0 former)
●NSsima.ns.cloudflare.com2026-03-10 → 2026-03-10 · 2 obs
● 2026-03-10 09:18:16
●NSsterling.ns.cloudflare.com2026-03-10 → 2026-03-10 · 2 obs
● 2026-03-10 09:18:16
●A104.21.42.482026-03-10 → 2026-03-10 · 2 obs
● 2026-03-10 09:18:16
●A172.67.156.552026-03-10 → 2026-03-10 · 2 obs
● 2026-03-10 09:18:16
●A2606:4700:3033::6815:2a302026-03-10 → 2026-03-10 · 2 obs
● 2026-03-10 09:18:16
●A2606:4700:3036::ac43:9c372026-03-10 → 2026-03-10 · 2 obs
● 2026-03-10 09:18:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| 7821b.com | sima.ns.cloudflare.com, sterling.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server: 108.162.192.222
NS records: sima.ns.cloudflare.com, sterling.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 7821b.com (unsigned zone)
⏱️ Timing
Total: 63ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.42.48, 172.67.156.55 |
| AAAA | 2 | 2606:4700:3033::6815:2a30, 2606:4700:3036::ac43:9c37 |
| NS | 2 | sima.ns.cloudflare.com, sterling.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | sima.ns.cloudflare.com dns.cloudflare.co |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (sima.ns.cloudflare.com, sima.ns.cloudflare.com, sima.ns.cloudflare.com...)
Analysis
IP Addresses
7821b.com resolves to four IPs: 2606:4700:3033::6815:2a30, 2606:4700:3036::ac43:9c37, 104.21.42.48 and 172.67.156.55.
Other host names such as jalvorn-54mex.digital, sinopolynewenergy.com, rumbacharters.com, goatbet888now.com and ocaml-programming.de share IP numbers with 7821b.com.
Name Servers
7821b.com is delegated to two name servers: sima.ns.cloudflare.com and sterling.ns.cloudflare.com.
7821b.com uses the same name server setup as other domains, including 26c17e.com, 8b3e.com, 847c55.com, 2535c5.com and 6d41c2.com.
At least part of the name servers for 7821b.com are shared with other domains, for instance jutaijiaju.com, 9887777.com, adnative.net, ccw.coop and rockvillerampage.com.
these name servers are commonly used with kyrie.ns.cloudflare.com, kayleigh.ns.cloudflare.com, candy.ns.cloudflare.com, owen.ns.cloudflare.com and sage.ns.cloudflare.com.
Host names with six IP numbers:
sima.ns.cloudflare.com points to: 2606:4700:50::adf5:3ade, 2803:f800:50::6ca2:c0de, 2a06:98c1:50::ac40:20de, 108.162.192.222, 172.64.32.222 and 173.245.58.222.
sterling.ns.cloudflare.com points to: 2606:4700:58::a29f:2c8f, 2803:f800:50::6ca2:c38f, 2a06:98c1:50::ac40:238f, 108.162.195.143, 162.159.44.143 and 172.64.35.143.