tsukuba-robots.com - robtex.com

tsukuba-robots.com

DNSSEC⚠️ Not signed
A2606:4700:3035::6815:437b🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:de2e🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.67.123Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.222.46🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSboyd.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b4b🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRboyd.ns.cloudflare.com
A2803:f800:50::6ca2:c14b🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRboyd.ns.cloudflare.com
A2a06:98c1:50::ac40:214b🇺🇸 Cloudflare2a06:98c1:50::/45
PTRboyd.ns.cloudflare.com
A108.162.193.75🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRboyd.ns.cloudflare.com
A172.64.33.75🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRboyd.ns.cloudflare.com
A173.245.59.75🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRboyd.ns.cloudflare.com
NScecelia.ns.cloudflare.com
A2606:4700:50::a29f:2687🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcecelia.ns.cloudflare.com
A2803:f800:50::6ca2:c287🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRcecelia.ns.cloudflare.com
A2a06:98c1:50::ac40:2287🇺🇸 Cloudflare2a06:98c1:50::/45
PTRcecelia.ns.cloudflare.com
A108.162.194.135🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcecelia.ns.cloudflare.com
A162.159.38.135Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcecelia.ns.cloudflare.com
A172.64.34.135🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcecelia.ns.cloudflare.com
TXTgoogle-site-verification=sX5i1p01a0eHtJXKVQTwcL8csEysj_bzve5Cvwdfk-Y
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.67.123, 172.67.222.46
IPv6 hints2606:4700:3035::6815:437b, 2606:4700:3037::ac43:de2e
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=254, name=cloudflare-ech.com
SOAboyd.ns.cloudflare.comdns@cloudflare.com serial=2409567493

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=1785949379

Same first word

tsukuba-robots.com

DNS History

14 records (6 active, 8 former)

20162017201820192020202120222023202420252026NSboyd.ns.cloudflare.comcecelia.ns.cloudflare.comdns0.heteml.jpdns1.heteml.jpjm1.dns.comjm2.dns.comMXmail48.heteml.jpA104.21.67.123172.67.222.462606:4700:3035::6815:437b2606:4700:3037::ac43:de2e108.187.183.251157.7.188.133219.94.217.213
●NSboyd.ns.cloudflare.com2026-06-22 → 2026-08-05 · 3 obs
○ 2018-12-30 19:25:10
● 2026-06-22 23:39:04
● 2026-08-05 17:05:38
●NScecelia.ns.cloudflare.com2026-06-22 → 2026-08-05 · 3 obs
○ 2018-12-30 19:25:10
● 2026-06-22 23:39:04
● 2026-08-05 17:05:38
○NSdns0.heteml.jp2015-06-14 → 2017-02-14 · 4 obs
● 2015-06-14 03:26:36
● 2017-02-14 18:11:38
○ 2018-12-30 19:25:10
○ 2026-08-05 17:05:38
○NSdns1.heteml.jp2015-06-14 → 2017-02-14 · 4 obs
● 2015-06-14 03:26:36
● 2017-02-14 18:11:38
○ 2018-12-30 19:25:10
○ 2026-08-05 17:05:38
○NSjm1.dns.com2018-12-30 → 2018-12-30 · 4 obs
○ 2017-02-14 18:11:38
● 2018-12-30 19:25:10
○ 2026-06-22 23:39:04
○ 2026-08-05 17:05:38
○NSjm2.dns.com2018-12-30 → 2018-12-30 · 4 obs
○ 2017-02-14 18:11:38
● 2018-12-30 19:25:10
○ 2026-06-22 23:39:04
○ 2026-08-05 17:05:38
○MXmail48.heteml.jp2015-06-14 → 2017-02-14 · 4 obs
● 2015-06-14 03:26:36
● 2017-02-14 18:11:38
○ 2018-12-30 19:25:10
○ 2026-08-05 17:05:38
●A104.21.67.1232026-06-22 → 2026-08-05 · 3 obs
○ 2018-12-30 19:25:10
● 2026-06-22 23:39:04
● 2026-08-05 17:05:38
○A108.187.183.2512018-12-30 → 2018-12-30 · 4 obs
○ 2017-02-14 18:11:38
● 2018-12-30 19:25:10
○ 2026-06-22 23:39:04
○ 2026-08-05 17:05:38
○A157.7.188.1332015-11-06 → 2017-02-14 · 5 obs
○ 2015-06-14 03:26:36
● 2015-11-06 04:47:14
● 2017-02-14 18:11:38
○ 2018-12-30 19:25:10
○ 2026-08-05 17:05:38
●A172.67.222.462026-06-22 → 2026-08-05 · 3 obs
○ 2018-12-30 19:25:10
● 2026-06-22 23:39:04
● 2026-08-05 17:05:38
○A219.94.217.2132015-06-14 → 2015-06-14 · 3 obs
● 2015-06-14 03:26:36
○ 2015-11-06 04:47:14
○ 2026-08-05 17:05:38
●A2606:4700:3035::6815:437b2026-06-22 → 2026-08-05 · 3 obs
○ 2018-12-30 19:25:10
● 2026-06-22 23:39:04
● 2026-08-05 17:05:38
●A2606:4700:3037::ac43:de2e2026-06-22 → 2026-08-05 · 3 obs
○ 2018-12-30 19:25:10
● 2026-06-22 23:39:04
● 2026-08-05 17:05:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
tsukuba-robots.comboyd.ns.cloudflare.com, cecelia.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.75

NS records: boyd.ns.cloudflare.com, cecelia.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tsukuba-robots.com (unsigned zone)

⏱️ Timing

Total: 143ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.67.123, 172.67.222.46
AAAA22606:4700:3035::6815:437b, 2606:4700:3037::ac43:de2e
NS2boyd.ns.cloudflare.com, cecelia.ns.cloudflare.com
TXT1google-site-verification=sX5i1p01a0eHtJX
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1boyd.ns.cloudflare.com dns.cloudflare.co

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

tsukuba-robots.com has four IP addresses: 104.21.67.123, 172.67.222.46, 2606:4700:3035::6815:437b and 2606:4700:3037::ac43:de2e.

Two other host names, along with cxcrm.cn, cakhiaz34.live and minton.co, also share IP numbers with tsukuba-robots.com.

Name Servers

tsukuba-robots.com uses two name servers for its delegation: boyd.ns.cloudflare.com and cecelia.ns.cloudflare.com.

tsukuba-robots.com shares its NS records with other domains, for example hostimg.cloud, aksiaja.com, situsslotserverluar.com and two others.

tsukuba-robots.com has at least partial name server overlap with other domains, such as obserwacjehub21.click, keepgrowup.com, japancrate.com and two others.

These name servers tend to appear together with the name servers chad.ns.cloudflare.com, melinda.ns.cloudflare.com and dahlia.ns.cloudflare.com.

DNS names with 6 IP addresses:

Hostname boyd.ns.cloudflare.com directs to 108.162.193.75, 172.64.33.75 and 173.245.59.75 along with 3 other IP addresses.

Hostname cecelia.ns.cloudflare.com directs to 108.162.194.135, 162.159.38.135 and 172.64.34.135 along with 3 other IP addresses.