by2100.com - robtex.com

by2100.com

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:80e0🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:248🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.2.72Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.128.224🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSdoug.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b9f🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdoug.ns.cloudflare.com
A2803:f800:50::6ca2:c19f🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdoug.ns.cloudflare.com
A2a06:98c1:50::ac40:219f🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdoug.ns.cloudflare.com
A108.162.193.159🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdoug.ns.cloudflare.com
A172.64.33.159🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdoug.ns.cloudflare.com
A173.245.59.159🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdoug.ns.cloudflare.com
NSnora.ns.cloudflare.com
A2606:4700:50::adf5:3ad5🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnora.ns.cloudflare.com
A2803:f800:50::6ca2:c0d5🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRnora.ns.cloudflare.com
A2a06:98c1:50::ac40:20d5🇺🇸 Cloudflare2a06:98c1:50::/45
PTRnora.ns.cloudflare.com
A108.162.192.213🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnora.ns.cloudflare.com
A172.64.32.213🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnora.ns.cloudflare.com
A173.245.58.213🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnora.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.2.72, 172.67.128.224
IPv6 hints2606:4700:3033::ac43:80e0, 2606:4700:3034::6815:248
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=219, name=cloudflare-ech.com
SOAdoug.ns.cloudflare.comdns@cloudflare.com serial=2410757116

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=1785749607
⚠️ On DNS blocklist: tif

Subdomains

www.by2100.com

Same first word

by2100.com

Similar names

10by20.co.bw

DNS History

14 records (6 active, 8 former)

200920112013201520172019202120232025NSdoug.ns.cloudflare.comnora.ns.cloudflare.comdns1.domaincentral.net.audns2.domaincentral.net.auA104.21.2.72172.67.128.2242606:4700:3033::ac43:80e02606:4700:3034::6815:248188.114.96.0188.114.97.02606:4700:3030::6815:2482606:4700:3035::ac43:80e02a06:98c1:3120::2a06:98c1:3121::
○NSdns1.domaincentral.net.au2015-06-29 → 2016-04-26 · 5 obs
○ 2008-03-09 01:58:44
● 2015-06-29 14:13:38
● 2016-04-26 12:39:00
○ 2016-12-25 17:40:34
○ 2026-08-03 09:41:14
○NSdns2.domaincentral.net.au2015-06-29 → 2016-04-26 · 5 obs
○ 2008-03-09 01:58:44
● 2015-06-29 14:13:38
● 2016-04-26 12:39:00
○ 2016-12-25 17:40:34
○ 2026-08-03 09:41:14
●NSdoug.ns.cloudflare.com2026-05-27 → 2026-08-03 · 3 obs
○ 2016-12-25 17:40:34
● 2026-05-27 09:40:24
● 2026-08-03 09:41:14
●NSnora.ns.cloudflare.com2026-05-27 → 2026-08-03 · 3 obs
○ 2016-12-25 17:40:34
● 2026-05-27 09:40:24
● 2026-08-03 09:41:14
●A104.21.2.722026-05-27 → 2026-08-03 · 3 obs
● 2026-05-27 09:40:24
○ 2026-06-28 00:27:20
● 2026-08-03 09:41:14
●A172.67.128.2242026-05-27 → 2026-08-03 · 3 obs
● 2026-05-27 09:40:24
○ 2026-06-28 00:27:20
● 2026-08-03 09:41:14
○A188.114.96.02026-06-28 → 2026-06-28 · 3 obs
○ 2026-05-27 09:40:24
● 2026-06-28 00:27:20
○ 2026-08-03 09:41:14
○A188.114.97.02026-06-28 → 2026-06-28 · 3 obs
○ 2026-05-27 09:40:24
● 2026-06-28 00:27:20
○ 2026-08-03 09:41:14
○A2606:4700:3030::6815:2482026-05-27 → 2026-05-27 · 3 obs
● 2026-05-27 09:40:24
○ 2026-06-28 00:27:20
○ 2026-08-03 09:41:14
●A2606:4700:3033::ac43:80e02026-08-03 → 2026-08-03 · 2 obs
○ 2026-06-28 00:27:20
● 2026-08-03 09:41:14
●A2606:4700:3034::6815:2482026-08-03 → 2026-08-03 · 2 obs
○ 2026-06-28 00:27:20
● 2026-08-03 09:41:14
○A2606:4700:3035::ac43:80e02026-05-27 → 2026-05-27 · 3 obs
● 2026-05-27 09:40:24
○ 2026-06-28 00:27:20
○ 2026-08-03 09:41:14
○A2a06:98c1:3120::2026-06-28 → 2026-06-28 · 3 obs
○ 2026-05-27 09:40:24
● 2026-06-28 00:27:20
○ 2026-08-03 09:41:14
○A2a06:98c1:3121::2026-06-28 → 2026-06-28 · 3 obs
○ 2026-05-27 09:40:24
● 2026-06-28 00:27:20
○ 2026-08-03 09:41:14

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comh.gtld-servers.net, f.gtld-servers.net, l.gtld-servers.net, j.gtld-servers.net...-
by2100.comdoug.ns.cloudflare.com, nora.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.192.213

NS records: doug.ns.cloudflare.com, nora.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for by2100.com (unsigned zone)

⏱️ Timing

Total: 186ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.2.72, 172.67.128.224
AAAA22606:4700:3033::ac43:80e0, 2606:4700:3034::6815:248
NS2doug.ns.cloudflare.com, nora.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1doug.ns.cloudflare.com dns.cloudflare.co

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

www.by2100.com is delegated beneath by2100.com.

IP Addresses

by2100.com points to the four IP addresses 104.21.2.72, 172.67.128.224, 2606:4700:3033::ac43:80e0 and 2606:4700:3034::6815:248.

Two other host names, along with bottlefiller.co.uk, insightstofaith.com and ns2.mit-medica.com, also share IP numbers with by2100.com.

Name Servers

by2100.com uses two name servers for its delegation: doug.ns.cloudflare.com and nora.ns.cloudflare.com.

by2100.com shares its NS records with other domains, for example 1nbankli.com, ncrid.org, fnbli.com and two others.

There is at least partial name server overlap between by2100.com and other domains — dsastro.com, idealofsweden.be, kettner.pt and two more among them.

These name servers frequently co-occur with the name servers chan.ns.cloudflare.com and elaine.ns.cloudflare.com.

DNS names with 6 IP addresses:

Hostname doug.ns.cloudflare.com directs to 108.162.193.159, 172.64.33.159 and 173.245.59.159 along with 3 other IP addresses.

Hostname nora.ns.cloudflare.com directs to 108.162.192.213, 172.64.32.213 and 173.245.58.213 along with 3 other IP addresses.