51penbook.com - robtex.com

51penbook.com

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:ac05🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3031::6815:4ff1🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.79.241Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.172.5🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSbeth.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a67🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbeth.ns.cloudflare.com
A2803:f800:50::6ca2:c067🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRbeth.ns.cloudflare.com
A2a06:98c1:50::ac40:2067🇺🇸 Cloudflare2a06:98c1:50::/45
PTRbeth.ns.cloudflare.com
A108.162.192.103🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbeth.ns.cloudflare.com
A172.64.32.103🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbeth.ns.cloudflare.com
A173.245.58.103🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbeth.ns.cloudflare.com
NSlloyd.ns.cloudflare.com
A2606:4700:58::adf5:3bc5🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlloyd.ns.cloudflare.com
A2803:f800:50::6ca2:c1c5🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRlloyd.ns.cloudflare.com
A2a06:98c1:50::ac40:21c5🇺🇸 Cloudflare2a06:98c1:50::/45
PTRlloyd.ns.cloudflare.com
A108.162.193.197🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlloyd.ns.cloudflare.com
A172.64.33.197🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlloyd.ns.cloudflare.com
A173.245.59.197🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlloyd.ns.cloudflare.com
TXTgoogle-site-verification=dcmMJzAEBfIalK5KTNhopuC9OZ2BKzFvwf1AyKysu1c
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.79.241, 172.67.172.5
IPv6 hints2606:4700:3030::ac43:ac05, 2606:4700:3031::6815:4ff1
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=99, name=cloudflare-ech.com
SOAbeth.ns.cloudflare.comdns@cloudflare.com serial=2402685630

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=1778450671

Same first word

51penbook.com

DNS History

6 records (6 active, 0 former)

NSbeth.ns.cloudflare.comlloyd.ns.cloudflare.comA104.21.79.241172.67.172.52606:4700:3030::ac43:ac052606:4700:3031::6815:4ff1
●NSbeth.ns.cloudflare.com2026-04-15 → 2026-05-10 · 2 obs
● 2026-04-15 08:32:20
● 2026-05-10 22:24:10
●NSlloyd.ns.cloudflare.com2026-04-15 → 2026-05-10 · 2 obs
● 2026-04-15 08:32:20
● 2026-05-10 22:24:10
●A104.21.79.2412026-04-15 → 2026-05-10 · 2 obs
● 2026-04-15 08:32:20
● 2026-05-10 22:24:10
●A172.67.172.52026-04-15 → 2026-05-10 · 2 obs
● 2026-04-15 08:32:20
● 2026-05-10 22:24:10
●A2606:4700:3030::ac43:ac052026-04-15 → 2026-05-10 · 2 obs
● 2026-04-15 08:32:20
● 2026-05-10 22:24:10
●A2606:4700:3031::6815:4ff12026-04-15 → 2026-05-10 · 2 obs
● 2026-04-15 08:32:20
● 2026-05-10 22:24:10

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comm.gtld-servers.net, f.gtld-servers.net, e.gtld-servers.net, l.gtld-servers.net...-
51penbook.combeth.ns.cloudflare.com, lloyd.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.192.103

NS records: beth.ns.cloudflare.com, lloyd.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 51penbook.com (unsigned zone)

⏱️ Timing

Total: 102ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.172.5, 104.21.79.241
AAAA22606:4700:3030::ac43:ac05, 2606:4700:3031::6815:4ff1
NS2beth.ns.cloudflare.com, lloyd.ns.cloudflare.com
TXT1google-site-verification=dcmMJzAEBfIalK5
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1beth.ns.cloudflare.com dns.cloudflare.co

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

51penbook.com maps to four IP numbers: 2606:4700:3030::ac43:ac05, 2606:4700:3031::6815:4ff1, 104.21.79.241 and 172.67.172.5.

Other host names such as www.fsjjobfair.ca, van-tuinen.nl, www.jgnzifxswczpu.site, colinfossa.top and portalcriatividade.com.br share IPs with 51penbook.com.

Name Servers

Two name servers beth.ns.cloudflare.com and lloyd.ns.cloudflare.com handle the delegation for 51penbook.com.

51penbook.com shares the same name server setup as other domains, for example ltsww.com, miner-us.com, tadseeker.com, iorr.org and linksmerchantservices.com.

51penbook.com at least partially shares name servers with other domains, for example hdord.com, lm9bbx.com, thebptc.com, keystocks.com and bdgwinw.cc.

these name servers are commonly used alongside abby.ns.cloudflare.com name servers.

Host names with six IP numbers:

beth.ns.cloudflare.com points to 2606:4700:50::adf5:3a67, 2803:f800:50::6ca2:c067, 2a06:98c1:50::ac40:2067, 108.162.192.103, 172.64.32.103 and 173.245.58.103.

lloyd.ns.cloudflare.com points to 2606:4700:58::adf5:3bc5, 2803:f800:50::6ca2:c1c5, 2a06:98c1:50::ac40:21c5, 108.162.193.197, 172.64.33.197 and 173.245.59.197.