joelkatzmd.com - robtex.com
joelkatzmd.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::ac43:bb4c🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3036::6815:50e4🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.80.228Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.187.76🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | burt.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::adf5:3b4f🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | burt.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c14f🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | burt.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:214f🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | burt.ns.cloudflare.com | ||||||
| A | 108.162.193.79🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | burt.ns.cloudflare.com | ||||||
| A | 172.64.33.79🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | burt.ns.cloudflare.com | ||||||
| A | 173.245.59.79🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | burt.ns.cloudflare.com | ||||||
| NS | phoenix.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:26c9🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | phoenix.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c2c9🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | phoenix.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:22c9🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | phoenix.ns.cloudflare.com | ||||||
| A | 108.162.194.201🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | phoenix.ns.cloudflare.com | ||||||
| A | 162.159.38.201Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | phoenix.ns.cloudflare.com | ||||||
| A | 172.64.34.201🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | phoenix.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.80.228, 172.67.187.76 | ||||||
| IPv6 hints | 2606:4700:3030::ac43:bb4c, 2606:4700:3036::6815:50e4 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=53, name=cloudflare-ech.com | ||||||
| SOA | burt.ns.cloudflare.comdns@cloudflare.com serial=2398252731 | ||||||
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=1775999647 | ||||||
Same first word
joelkatzmd.com |
DNS History
6 records (6 active, 0 former)
●NSburt.ns.cloudflare.com2026-02-18 → 2026-04-12 · 2 obs
● 2026-04-12 13:23:26
●NSphoenix.ns.cloudflare.com2026-02-18 → 2026-04-12 · 2 obs
● 2026-04-12 13:23:26
●A104.21.80.2282026-02-18 → 2026-04-12 · 2 obs
● 2026-04-12 13:23:26
●A172.67.187.762026-02-18 → 2026-04-12 · 2 obs
● 2026-04-12 13:23:26
●A2606:4700:3030::ac43:bb4c2026-02-18 → 2026-04-12 · 2 obs
● 2026-04-12 13:23:26
●A2606:4700:3036::6815:50e42026-02-18 → 2026-04-12 · 2 obs
● 2026-04-12 13:23:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | g.gtld-servers.net, j.gtld-servers.net, f.gtld-servers.net, l.gtld-servers.net... | - |
| joelkatzmd.com | burt.ns.cloudflare.com, phoenix.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:108.162.194.201
NS records: burt.ns.cloudflare.com, phoenix.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for joelkatzmd.com (unsigned zone)
⏱️ Timing
Total: 154ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.80.228, 172.67.187.76 |
| AAAA | 2 | 2606:4700:3030::ac43:bb4c, 2606:4700:3036::6815:50e4 |
| NS | 2 | burt.ns.cloudflare.com, phoenix.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | burt.ns.cloudflare.com dns.cloudflare.co |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (burt.ns.cloudflare.com, burt.ns.cloudflare.com, burt.ns.cloudflare.com...)
Analysis
IP Addresses
joelkatzmd.com points to four IP numbers: 2606:4700:3030::ac43:bb4c, 2606:4700:3036::6815:50e4, 104.21.80.228 and 172.67.187.76.
Other host names, for instance beiladungsservice-aachen.de, cruzkvgqb.post-blogs.com, josefinaqdpcp81.post-blogs.com, lastminuteholidaypackages08652.post-blogs.com and tminfo.ro share IP numbers with joelkatzmd.com.
Name Servers
joelkatzmd.com's delegation is to two name servers burt.ns.cloudflare.com and phoenix.ns.cloudflare.com.
joelkatzmd.com shares the same name server configuration as other domains, such as knepperconciergemedicine.com, udayjanimd.com, docohadi.com, seanoconnormd.com and cardenasinternalmedicine.com.
joelkatzmd.com at least partially shares its name servers with other domains, for instance uzis.sk, travelling-show.ru, fiz88.club, footbar.info and lacacuvu5327.workers.dev.
These name servers are commonly used with lamar.ns.cloudflare.com, coco.ns.cloudflare.com and elma.ns.cloudflare.com.
Host names with six IP numbers:
burt.ns.cloudflare.com points to: 2606:4700:58::adf5:3b4f, 2803:f800:50::6ca2:c14f, 2a06:98c1:50::ac40:214f, 108.162.193.79, 172.64.33.79 and 173.245.59.79.
phoenix.ns.cloudflare.com points to: 2606:4700:50::a29f:26c9, 2803:f800:50::6ca2:c2c9, 2a06:98c1:50::ac40:22c9, 108.162.194.201, 162.159.38.201 and 172.64.34.201.