`cf.northduck.workers.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::6815:5534^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:ca79^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.85.52^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.202.121^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.85.52, 172.67.202.121
		IPv6	2606:4700:3035::6815:5534, 2606:4700:3037::ac43:ca79

`northduck.workers.dev`

	DNSSEC	⚠️ Not signed
	NS	`alex.ns.cloudflare.com` ⭐
	NS	`itzel.ns.cloudflare.com`
	SOA	`alex.ns.cloudflare.com`dns@cloudflare.com serial=2398198763

Same first word

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cf.de

cf.finance

cf.cz

cf.by

cf.ac

cf.gs

cf.net

cf.ua

cf.rs

cf.kz

cf.me

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cf.co.za

cf.academy

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cf.dnsalias.com

cf.wtf

cf

cf.news

cf.dev

cf.com.mx

cf.vc

cf.ru

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cf.tools

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cf.sa

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Similar names

fc.lc

fc.ms

fc.group

fc.net.au

fc.tt

fc.wtf

fc.to

fc.business

fc.nz

fc.team

fc.nl

fc.hu

fc.org.br

fc.org.cn

fc.zuerich

fc.by

fc.cc

fc.su

fc.world

fc.cl

fc.com.ua

fc.technology

fc.com.es

fc.lviv.ua

fc.de

fc.style

fc.com

fc.qa

fc.tv

fc.com.mk

fc.wang

fc.vc

fc.idv.tw

fc.net.pk

fc.city

fc.om

fc.org.nz

fc.sk

fc.school

fc.sa

fc.dk

fc.gp

fc.life

fc.pl

fc.ac.ae

fc.chat

fc.org.uk

fc.squares.net

fc.one

fc.email

fc.tmp.br

fc.pe

fc.jx.cn

fc.bayern

fc.lt

DNS History

4 records (4 active, 0 former)

●A104.21.85.522026-03-20 → 2026-03-22 · 2 obs

● 2026-03-20 08:53:50
● 2026-03-22 23:31:08

●A172.67.202.1212026-03-20 → 2026-03-22 · 2 obs

● 2026-03-20 08:53:50
● 2026-03-22 23:31:08

●A2606:4700:3035::6815:55342026-03-20 → 2026-03-22 · 2 obs

● 2026-03-20 08:53:50
● 2026-03-22 23:31:08

●A2606:4700:3037::ac43:ca792026-03-20 → 2026-03-22 · 2 obs

● 2026-03-20 08:53:50
● 2026-03-22 23:31:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
workers.dev	clyde.ns.cloudflare.com, sofia.ns.cloudflare.com	-
northduck.workers.dev	alex.ns.cloudflare.com, itzel.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.193.100

NS records: alex.ns.cloudflare.com, itzel.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for workers.dev (unsigned zone)

⏱️ Timing

Total: 266ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`172.64.80.1`
AAAA	2	`2606:4700:3037::ac43:ca79, 2606:4700:3035::6815:5534`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`

Analysis

IP Addresses

cf.northduck.workers.dev points to four IP numbers: 2606:4700:3035::6815:5534, 2606:4700:3037::ac43:ca79, 104.21.85.52 and 172.67.202.121.

Other host names including vision-tech.com.hk, ziduryy.com, yonofumoyovapeo.com, www.jz-art.com and game.edu.pl share IP numbers with cf.northduck.workers.dev.

cf.northduck.workers.dev - robtex.com