`knowledge-world.web.app`

	DNSSEC	⚠️ Not signed
	A	2620:0:890::100^{🇺🇸 Fastly2620:0:890::/48 Google}
	A	199.36.158.100^{🇺🇸 Fastly199.36.158.0/24 Google}

`web.app`

	DNSSEC	⚠️ Not signed
	A	2620:0:890::100^{🇺🇸 Fastly2620:0:890::/48 Google}
	A	199.36.158.100^{🇺🇸 Fastly199.36.158.0/24 Google}
	NS	`ns1.googledomains.com` ⭐
	NS	`ns2.googledomains.com`
	NS	`ns3.googledomains.com`
	NS	`ns4.googledomains.com`
	SOA	`ns1.googledomains.com`cloud-dns-hostmaster@google.com serial=1

WOT: SAFE (50/100)
rank #1241 globally
rank #4 in the tld

web.app

web.app is a second‑level domain under the.appgTLD, operated by Google. It is primarily used as a hosting namespace for Firebase‑hosted web applications.

Key facts

Owner / operator: Google (Alphabet Inc.)
TLD:.app— gTLD
Primary purpose: Hosting for Firebase‑hosted web apps and static sites
Status: active

Notable subdomains or services

*.web.app– Firebase Hosting (static web apps)

Related domains

firebaseapp.com– another Firebase hosting domain

WOT: SAFE (50/100)
📈 Tranco rank: #2,868

Same first word

knowledge-world.web.app

DNS History

2 records (2 active, 0 former)

●A199.36.158.1002026-03-15 → 2026-07-13 · 2 obs

● 2026-03-15 22:15:56
● 2026-07-13 05:38:36

●A2620:0:890::1002026-03-15 → 2026-07-13 · 2 obs

● 2026-03-15 22:15:56
● 2026-07-13 05:38:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
app	ns-tld2.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com...	10 records
web.app	ns1.googledomains.com, ns3.googledomains.com, ns4.googledomains.com, ns2.googledomains.com	-

✅ Authoritative Response

Server:216.239.32.99

NS records: ns1.googledomains.com, ns3.googledomains.com, ns4.googledomains.com, ns2.googledomains.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for web.app (unsigned zone)

⏱️ Timing

Total: 833ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`199.36.158.100`
AAAA	1	`2620:0:890::100`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns-tld2.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...)

Analysis

IP Addresses

knowledge-world.web.app has two IP addresses: 199.36.158.100 and 2620:0:890::100

Additional host names — contact-for-case-reply-tre1.firebaseapp.com, folder77838783s-s908938ui3.firebaseapp.com, meta-business-case-8fa60.web.app and two others — share IP numbers with knowledge-world.web.app.

knowledge-world.web.app - robtex.com