qfteach.com - robtex.com

qfteach.com

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:a271πŸ‡ΊπŸ‡Έ Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A2606:4700:3035::6815:42acπŸ‡ΊπŸ‡Έ Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A104.21.66.172Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A172.67.162.113πŸ‡ΊπŸ‡Έ Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
NSelma.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a9aπŸ‡ΊπŸ‡Έ Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelma.ns.cloudflare.com
A2803:f800:50::6ca2:c09aπŸ‡¨πŸ‡· Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRelma.ns.cloudflare.com
A2a06:98c1:50::ac40:209aπŸ‡ΊπŸ‡Έ Cloudflare2a06:98c1:50::/45
PTRelma.ns.cloudflare.com
A108.162.192.154πŸ‡ΊπŸ‡Έ Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelma.ns.cloudflare.com
A172.64.32.154πŸ‡ΊπŸ‡Έ Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelma.ns.cloudflare.com
A173.245.58.154πŸ‡ΊπŸ‡Έ Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelma.ns.cloudflare.com
NSgeorge.ns.cloudflare.com
A2606:4700:58::adf5:3ba7πŸ‡ΊπŸ‡Έ Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgeorge.ns.cloudflare.com
A2803:f800:50::6ca2:c1a7πŸ‡¨πŸ‡· Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRgeorge.ns.cloudflare.com
A2a06:98c1:50::ac40:21a7πŸ‡ΊπŸ‡Έ Cloudflare2a06:98c1:50::/45
PTRgeorge.ns.cloudflare.com
A108.162.193.167πŸ‡ΊπŸ‡Έ Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgeorge.ns.cloudflare.com
A172.64.33.167πŸ‡ΊπŸ‡Έ Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgeorge.ns.cloudflare.com
A173.245.59.167πŸ‡ΊπŸ‡Έ Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgeorge.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 βœ“ hints match
IPv4 hints104.21.66.172, 172.67.162.113
IPv6 hints2606:4700:3033::ac43:a271, 2606:4700:3035::6815:42ac
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=224, name=cloudflare-ech.com
SOAelma.ns.cloudflare.comdns@cloudflare.com serial=2400374795

com

Same first word

Similar names

DNS History

16 records (6 active, 10 former)

200920112013201520172019202120232025NSelma.ns.cloudflare.comgeorge.ns.cloudflare.coma.share-dns.coma1.share-dns.comb.share-dns.netb1.share-dns.netdns13.hichina.comdns14.hichina.comns1.fastpark.netns2.fastpark.netA104.21.66.172172.67.162.1132606:4700:3033::ac43:a2712606:4700:3035::6815:42ac216.8.177.2342.156.141.13
β—‹NSa.share-dns.com2026-03-25 β†’ 2026-03-25 Β· 4 obs
β—‹ 2017-05-17 04:48:56
● 2026-03-25 16:19:06
β—‹ 2026-04-16 08:05:54
β—‹ 2026-04-16 08:05:56
β—‹NSa1.share-dns.com2026-03-25 β†’ 2026-03-25 Β· 4 obs
β—‹ 2017-05-17 04:48:56
● 2026-03-25 16:19:06
β—‹ 2026-04-16 08:05:54
β—‹ 2026-04-16 08:05:56
β—‹NSb.share-dns.net2026-03-25 β†’ 2026-03-25 Β· 4 obs
β—‹ 2017-05-17 04:48:56
● 2026-03-25 16:19:06
β—‹ 2026-04-16 08:05:54
β—‹ 2026-04-16 08:05:56
β—‹NSb1.share-dns.net2026-03-25 β†’ 2026-03-25 Β· 4 obs
β—‹ 2017-05-17 04:48:56
● 2026-03-25 16:19:06
β—‹ 2026-04-16 08:05:54
β—‹ 2026-04-16 08:05:56
β—‹NSdns13.hichina.com2015-08-12 β†’ 2017-05-17 Β· 5 obs
β—‹ 2008-03-12 19:24:28
● 2015-08-12 00:57:44
● 2017-05-17 04:48:56
β—‹ 2026-03-25 16:19:06
β—‹ 2026-04-16 08:05:56
β—‹NSdns14.hichina.com2015-08-12 β†’ 2017-05-17 Β· 5 obs
β—‹ 2008-03-12 19:24:28
● 2015-08-12 00:57:44
● 2017-05-17 04:48:56
β—‹ 2026-03-25 16:19:06
β—‹ 2026-04-16 08:05:56
●NSelma.ns.cloudflare.com2026-04-16 β†’ 2026-04-16 Β· 3 obs
β—‹ 2026-03-25 16:19:06
● 2026-04-16 08:05:54
● 2026-04-16 08:05:56
●NSgeorge.ns.cloudflare.com2026-04-16 β†’ 2026-04-16 Β· 3 obs
β—‹ 2026-03-25 16:19:06
● 2026-04-16 08:05:54
● 2026-04-16 08:05:56
β—‹NSns1.fastpark.net2008-03-12 β†’ 2008-03-12 Β· 3 obs
● 2008-03-12 19:24:28
β—‹ 2015-08-12 00:57:44
β—‹ 2026-04-16 08:05:56
β—‹NSns2.fastpark.net2008-03-12 β†’ 2008-03-12 Β· 3 obs
● 2008-03-12 19:24:28
β—‹ 2015-08-12 00:57:44
β—‹ 2026-04-16 08:05:56
●A104.21.66.1722026-04-16 β†’ 2026-04-16 Β· 3 obs
β—‹ 2026-03-25 16:19:06
● 2026-04-16 08:05:54
● 2026-04-16 08:05:56
●A172.67.162.1132026-04-16 β†’ 2026-04-16 Β· 3 obs
β—‹ 2026-03-25 16:19:06
● 2026-04-16 08:05:54
● 2026-04-16 08:05:56
β—‹A216.8.177.232008-03-12 β†’ 2008-03-12 Β· 3 obs
● 2008-03-12 19:24:28
β—‹ 2015-08-12 00:57:44
β—‹ 2026-04-16 08:05:56
●A2606:4700:3033::ac43:a2712026-04-16 β†’ 2026-04-16 Β· 3 obs
β—‹ 2026-03-25 16:19:06
● 2026-04-16 08:05:54
● 2026-04-16 08:05:56
●A2606:4700:3035::6815:42ac2026-04-16 β†’ 2026-04-16 Β· 3 obs
β—‹ 2026-03-25 16:19:06
● 2026-04-16 08:05:54
● 2026-04-16 08:05:56
β—‹A42.156.141.132015-08-12 β†’ 2017-05-17 Β· 5 obs
β—‹ 2008-03-12 19:24:28
● 2015-08-12 00:57:44
● 2017-05-17 04:48:56
β—‹ 2026-03-25 16:19:06
β—‹ 2026-04-16 08:05:56

πŸ” DNS Trace

πŸ“‹ Delegation Chain

ZoneNameserversGlue
comi.gtld-servers.net, j.gtld-servers.net, d.gtld-servers.net, l.gtld-servers.net...-
qfteach.comelma.ns.cloudflare.com, george.ns.cloudflare.com12 records

βœ… Authoritative Response

Server:108.162.192.154

NS records: elma.ns.cloudflare.com, george.ns.cloudflare.com

πŸ”’ DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for qfteach.com (unsigned zone)

⏱️ Timing

Total: 170ms | Queries: -

πŸ“„ Records

TypeCountSample Data
A2104.21.66.172, 172.67.162.113
AAAA22606:4700:3035::6815:42ac, 2606:4700:3033::ac43:a271
NS2elma.ns.cloudflare.com, george.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1elma.ns.cloudflare.com dns.cloudflare.co

πŸ“Œ Glue Records Collected

Total: 12

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

Analysis

IP Addresses

qfteach.com points to four IP numbers: 2606:4700:3033::ac43:a271, 2606:4700:3035::6815:42ac, 104.21.66.172 and 172.67.162.113.

Other host names, for instance brcdev.net, wean.at, kurchatov.info, ahzongguang.com and 5ginfo.nl share IP numbers with qfteach.com.

Name Servers

qfteach.com is delegated to two name servers: elma.ns.cloudflare.com and george.ns.cloudflare.com.

qfteach.com uses the same name server setup as other domains, for instance slbayy.com, allfloridasealcoat.com, comparehealthrates.com, mianmutao.com and qhbyd.com.

qfteach.com shares name servers with other domains at least partially, for instance tjboye.com, distrinando.com, 56189m.com, maddreypllc.com and womeninagscience.org.

these name servers are often used together with the name servers leland.ns.cloudflare.com.

Host names with six IP numbers: elma.ns.cloudflare.com points to 2606:4700:50::adf5:3a9a, 2803:f800:50::6ca2:c09a, 2a06:98c1:50::ac40:209a, 108.162.192.154, 172.64.32.154 and 173.245.58.154; george.ns.cloudflare.com points to 2606:4700:58::adf5:3ba7, 2803:f800:50::6ca2:c1a7, 2a06:98c1:50::ac40:21a7, 108.162.193.167, 172.64.33.167 and 173.245.59.167.