portdan.com - robtex.com

portdan.com

DNSSEC⚠️ Not signed
A2606:4700:3035::6815:474a🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:8fe5🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.71.74Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.143.229🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NScourtney.ns.cloudflare.com ⭐
A2606:4700:50::a29f:2682🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcourtney.ns.cloudflare.com
A2803:f800:50::6ca2:c282🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRcourtney.ns.cloudflare.com
A2a06:98c1:50::ac40:2282🇺🇸 Cloudflare2a06:98c1:50::/45
PTRcourtney.ns.cloudflare.com
A108.162.194.130🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcourtney.ns.cloudflare.com
A162.159.38.130Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcourtney.ns.cloudflare.com
A172.64.34.130🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcourtney.ns.cloudflare.com
NSguss.ns.cloudflare.com
A2606:4700:58::adf5:3bac🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRguss.ns.cloudflare.com
A2803:f800:50::6ca2:c1ac🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRguss.ns.cloudflare.com
A2a06:98c1:50::ac40:21ac🇺🇸 Cloudflare2a06:98c1:50::/45
PTRguss.ns.cloudflare.com
A108.162.193.172🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRguss.ns.cloudflare.com
A172.64.33.172🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRguss.ns.cloudflare.com
A173.245.59.172🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRguss.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.71.74, 172.67.143.229
IPv6 hints2606:4700:3035::6815:474a, 2606:4700:3037::ac43:8fe5
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=170, name=cloudflare-ech.com
SOAcourtney.ns.cloudflare.comdns@cloudflare.com serial=2409834682

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1784946297

Same first word

portdan.com

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DNS History

6 records (6 active, 0 former)

NScourtney.ns.cloudflare.comguss.ns.cloudflare.comA104.21.71.74172.67.143.2292606:4700:3035::6815:474a2606:4700:3037::ac43:8fe5
●NScourtney.ns.cloudflare.com2026-07-20 → 2026-07-25 · 2 obs
● 2026-07-20 13:58:00
● 2026-07-25 02:50:14
●NSguss.ns.cloudflare.com2026-07-20 → 2026-07-25 · 2 obs
● 2026-07-20 13:58:00
● 2026-07-25 02:50:14
●A104.21.71.742026-07-20 → 2026-07-25 · 2 obs
● 2026-07-20 13:58:00
● 2026-07-25 02:50:14
●A172.67.143.2292026-07-20 → 2026-07-25 · 2 obs
● 2026-07-20 13:58:00
● 2026-07-25 02:50:14
●A2606:4700:3035::6815:474a2026-07-20 → 2026-07-25 · 2 obs
● 2026-07-20 13:58:00
● 2026-07-25 02:50:14
●A2606:4700:3037::ac43:8fe52026-07-20 → 2026-07-25 · 2 obs
● 2026-07-20 13:58:00
● 2026-07-25 02:50:14

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comk.gtld-servers.net, m.gtld-servers.net, a.gtld-servers.net, b.gtld-servers.net...-
portdan.comguss.ns.cloudflare.com, courtney.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.130

NS records: guss.ns.cloudflare.com, courtney.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for portdan.com (unsigned zone)

⏱️ Timing

Total: 112ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.143.229, 104.21.71.74
AAAA22606:4700:3035::6815:474a, 2606:4700:3037::ac43:8fe5
NS2courtney.ns.cloudflare.com, guss.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1courtney.ns.cloudflare.com dns.cloudflar

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (guss.ns.cloudflare.com, guss.ns.cloudflare.com, guss.ns.cloudflare.com...)

Analysis

IP Addresses

portdan.com has four IP addresses: 104.21.71.74, 172.67.143.229, 2606:4700:3035::6815:474a and 2606:4700:3037::ac43:8fe5.

colombcalzone.cfd, www.associatedtravels.com, bopha.co.za and two other host names share IP numbers with portdan.com.

Name Servers

portdan.com is served by two delegated name servers, courtney.ns.cloudflare.com and guss.ns.cloudflare.com.

portdan.com uses the same name servers as several other domains — among them coderre.mx, kanryx.com.br, botpreneur.com and two more.

portdan.com has at least partial name server overlap with other domains, such as massdata.org, qdkzjdo.cn, 4164b5b88696.xyz and two others.

These name servers tend to appear together with the name servers monroe.ns.cloudflare.com, emerie.ns.cloudflare.com and isaac.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

courtney.ns.cloudflare.com carries IP addresses 108.162.194.130, 162.159.38.130 and 172.64.34.130, with 3 other addresses beyond those.

guss.ns.cloudflare.com carries IP addresses 108.162.193.172, 172.64.33.172 and 173.245.59.172, with 3 other addresses beyond those.