`office.pdf1.workers.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:5aa7^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3032::ac43:9e34^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.90.167^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.158.52^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.90.167, 172.67.158.52
		IPv6 hints	2606:4700:3031::6815:5aa7, 2606:4700:3032::ac43:9e34
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=166, name=cloudflare-ech.com

`pdf1.workers.dev`

	DNSSEC	⚠️ Not signed
	NS	`ines.ns.cloudflare.com` ⭐
	NS	`rodrigo.ns.cloudflare.com`
	SOA	`ines.ns.cloudflare.com`dns@cloudflare.com serial=2403228025

Subdomains

1.office.pdf1.workers.dev

Same first word

office.co.rs

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office.aero

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office.tv

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office.org

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office.ms

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office.vg

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office.cloud

office.es

office.blue

office.to

office.ceo

office.live

office.cooking

office.com.ng

office.rw

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office.lc

office.pm

office.eu

Similar names

office.com.co

ofifce.com

office.ir

office.gifts

office.biz

coffie.net

office.email

office.style

eciffo.jp

effico.com

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coffie.de

fifeco.com

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coffie.com

office.lt

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coiffe.com

office.city

office.ua

iceoff.com.br

effico.de

iceoff.se

effico.net

iceoff.com

ecoffi.com

eicoff.com

fecofi.be

cioffe.com

coiffe.fr

offiec.cn

coffie.hatenablog.com

ieffco.com

effico.fr

DNS History

4 records (4 active, 0 former)

●A104.21.90.1672026-05-08 → 2026-05-14 · 2 obs

● 2026-05-08 03:18:36
● 2026-05-14 21:20:42

●A172.67.158.522026-05-08 → 2026-05-14 · 2 obs

● 2026-05-08 03:18:36
● 2026-05-14 21:20:42

●A2606:4700:3031::6815:5aa72026-05-08 → 2026-05-14 · 2 obs

● 2026-05-08 03:18:36
● 2026-05-14 21:20:42

●A2606:4700:3032::ac43:9e342026-05-08 → 2026-05-14 · 2 obs

● 2026-05-08 03:18:36
● 2026-05-14 21:20:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
workers.dev	clyde.ns.cloudflare.com, sofia.ns.cloudflare.com	-
pdf1.workers.dev	ines.ns.cloudflare.com, rodrigo.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.192.164

NS records: ines.ns.cloudflare.com, rodrigo.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for workers.dev (unsigned zone)

⏱️ Timing

Total: 914ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.90.167, 172.67.158.52`
AAAA	2	`2606:4700:3032::ac43:9e34, 2606:4700:3031::6815:5aa7`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`

Analysis

Hierarchy

1.office.pdf1.workers.dev has office.pdf1.workers.dev as its parent.

IP Addresses

office.pdf1.workers.dev maps to four IP numbers: 2606:4700:3031::6815:5aa7, 2606:4700:3032::ac43:9e34, 104.21.90.167 and 172.67.158.52.

Other host names, for instance adobe-dns-2.mylesqoku589.trexgame.net, 1002.gr, the-3-greatest-moments-in-rest-pause-training-history.html.a17-112-152-32.zanderxkae155.trexgame.net, ge.(0x7868616d73746572)1.desi and (0x7868616d73746572)1.desi share IP numbers with office.pdf1.workers.dev.

office.pdf1.workers.dev - robtex.com