sf-school16.com - robtex.com

sf-school16.com

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:3a39🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3032::ac43:a806🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.58.57Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.168.6🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSarmfazh.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2c68🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRarmfazh.ns.cloudflare.com
A2803:f800:50::6ca2:c368🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRarmfazh.ns.cloudflare.com
A2a06:98c1:50::ac40:2368🇺🇸 Cloudflare2a06:98c1:50::/45
PTRarmfazh.ns.cloudflare.com
A108.162.195.104🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRarmfazh.ns.cloudflare.com
A162.159.44.104Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRarmfazh.ns.cloudflare.com
A172.64.35.104🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRarmfazh.ns.cloudflare.com
NSviolet.ns.cloudflare.com
A2606:4700:50::adf5:3aed🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRviolet.ns.cloudflare.com
A2803:f800:50::6ca2:c0ed🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRviolet.ns.cloudflare.com
A2a06:98c1:50::ac40:20ed🇺🇸 Cloudflare2a06:98c1:50::/45
PTRviolet.ns.cloudflare.com
A108.162.192.237🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRviolet.ns.cloudflare.com
A172.64.32.237🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRviolet.ns.cloudflare.com
A173.245.58.237🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRviolet.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.58.57, 172.67.168.6
IPv6 hints2606:4700:3031::6815:3a39, 2606:4700:3032::ac43:a806
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=196, name=cloudflare-ech.com
SOAarmfazh.ns.cloudflare.comdns@cloudflare.com serial=2407908478

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=1783250731
rank #848944 globally
rank #375522 in the tld

Same first word

sf-school16.com

DNS History

14 records (6 active, 8 former)

201820192020202120222023202420252026NSarmfazh.ns.cloudflare.comviolet.ns.cloudflare.comns1.behsamanco.comns1.dns.comns2.behsamanco.comns2.dns.comMXmail.sf-school16.comA104.21.58.57172.67.168.62606:4700:3031::6815:3a392606:4700:3032::ac43:a806107.163.31.15192.186.45.8494.232.175.136
●NSarmfazh.ns.cloudflare.com2026-07-04 → 2026-07-05 · 3 obs
○ 2026-06-01 00:38:34
● 2026-07-04 11:27:34
● 2026-07-05 12:12:52
○NSns1.behsamanco.com2017-09-28 → 2017-09-28 · 3 obs
● 2017-09-28 03:35:30
○ 2026-05-23 07:50:20
○ 2026-07-05 12:12:52
○NSns1.dns.com2026-05-23 → 2026-06-01 · 5 obs
○ 2017-09-28 03:35:30
● 2026-05-23 07:50:20
● 2026-06-01 00:38:34
○ 2026-07-04 11:27:34
○ 2026-07-05 12:12:52
○NSns2.behsamanco.com2017-09-28 → 2017-09-28 · 3 obs
● 2017-09-28 03:35:30
○ 2026-05-23 07:50:20
○ 2026-07-05 12:12:52
○NSns2.dns.com2026-05-23 → 2026-06-01 · 5 obs
○ 2017-09-28 03:35:30
● 2026-05-23 07:50:20
● 2026-06-01 00:38:34
○ 2026-07-04 11:27:34
○ 2026-07-05 12:12:52
●NSviolet.ns.cloudflare.com2026-07-04 → 2026-07-05 · 3 obs
○ 2026-06-01 00:38:34
● 2026-07-04 11:27:34
● 2026-07-05 12:12:52
○MXmail.sf-school16.com2017-09-28 → 2017-09-28 · 3 obs
● 2017-09-28 03:35:30
○ 2026-05-23 07:50:20
○ 2026-07-05 12:12:52
●A104.21.58.572026-07-04 → 2026-07-05 · 3 obs
○ 2026-06-01 00:38:34
● 2026-07-04 11:27:34
● 2026-07-05 12:12:52
○A107.163.31.152026-05-23 → 2026-06-01 · 5 obs
○ 2017-09-28 03:35:30
● 2026-05-23 07:50:20
● 2026-06-01 00:38:34
○ 2026-07-04 11:27:34
○ 2026-07-05 12:12:52
●A172.67.168.62026-07-04 → 2026-07-05 · 3 obs
○ 2026-06-01 00:38:34
● 2026-07-04 11:27:34
● 2026-07-05 12:12:52
○A192.186.45.842026-05-23 → 2026-06-01 · 5 obs
○ 2017-09-28 03:35:30
● 2026-05-23 07:50:20
● 2026-06-01 00:38:34
○ 2026-07-04 11:27:34
○ 2026-07-05 12:12:52
●A2606:4700:3031::6815:3a392026-07-04 → 2026-07-05 · 3 obs
○ 2026-06-01 00:38:34
● 2026-07-04 11:27:34
● 2026-07-05 12:12:52
●A2606:4700:3032::ac43:a8062026-07-04 → 2026-07-05 · 3 obs
○ 2026-06-01 00:38:34
● 2026-07-04 11:27:34
● 2026-07-05 12:12:52
○A94.232.175.1362017-09-28 → 2017-09-28 · 3 obs
● 2017-09-28 03:35:30
○ 2026-05-23 07:50:20
○ 2026-07-05 12:12:52

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comh.gtld-servers.net, j.gtld-servers.net, c.gtld-servers.net, f.gtld-servers.net...-
sf-school16.comviolet.ns.cloudflare.com, armfazh.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.195.104

NS records: violet.ns.cloudflare.com, armfazh.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sf-school16.com (unsigned zone)

⏱️ Timing

Total: 196ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.168.6, 104.21.58.57
AAAA22606:4700:3031::6815:3a39, 2606:4700:3032::ac43:a806
NS2armfazh.ns.cloudflare.com, violet.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1armfazh.ns.cloudflare.com dns.cloudflare

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

sf-school16.com points to the four IP addresses 104.21.58.57, 172.67.168.6, 2606:4700:3031::6815:3a39 and 2606:4700:3032::ac43:a806.

flixsif.com, cheapsmart.com, gearmarket.ru and two other host names share IP numbers with sf-school16.com.

Name Servers

DNS delegation for sf-school16.com points to two name servers: armfazh.ns.cloudflare.com and violet.ns.cloudflare.com.

sf-school16.com uses the same name servers as several other domains — among them radissoft.com, chinaruina.com, zgxhmy.com and two more.

There is at least partial name server overlap between sf-school16.com and other domains — archiesplants.com, nonameitem.com, blazepeakreaction-system.com and two more among them.

These name servers are routinely deployed together with the name servers reese.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

armfazh.ns.cloudflare.com has IP addresses 108.162.195.104, 162.159.44.104 and 172.64.35.104, plus 3 other.

violet.ns.cloudflare.com has IP addresses 108.162.192.237, 172.64.32.237 and 173.245.58.237, plus 3 other.