`build-sys.tech`

DNSSEC	⚠️ Not signed
NS	`ns3-l2.nic.ru` ⭐
		A	193.232.146.1^{🇷🇺 RU-CENTER193.232.146.0/24 -NETWORK}
			PTR	`ns3-l2.nic.ru`
NS	`ns4-cloud.nic.ru` ⚠️ Not in parent delegation
		A	89.104.93.30^{🇷🇺 ANYCAST-AS89.104.93.0/24 Ru-Center route}
		A	89.104.93.33^{🇷🇺 ANYCAST-AS89.104.93.0/24 Ru-Center route}
		A	89.104.93.34^{🇷🇺 ANYCAST-AS89.104.93.0/24 Ru-Center route}
		A	89.104.95.30^{🇷🇺 ANYCAST-AS89.104.95.0/24 Ru-Center route}
		A	89.104.95.33^{🇷🇺 ANYCAST-AS89.104.95.0/24 Ru-Center route}
		A	89.104.95.34^{🇷🇺 ANYCAST-AS89.104.95.0/24 Ru-Center route}
NS	`ns4-l2.nic.ru`
		A	91.217.20.20^{🇷🇺 RU-CENTER91.217.20.0/24}
			PTR	`ns4-l2.nic.ru`
NS	`ns8-cloud.nic.ru` ⚠️ Not in parent delegation
		A	89.104.93.31^{🇷🇺 ANYCAST-AS89.104.93.0/24 Ru-Center route}
		A	89.104.93.35^{🇷🇺 ANYCAST-AS89.104.93.0/24 Ru-Center route}
		A	89.104.93.36^{🇷🇺 ANYCAST-AS89.104.93.0/24 Ru-Center route}
		A	89.104.95.31^{🇷🇺 ANYCAST-AS89.104.95.0/24 Ru-Center route}
		A	89.104.95.35^{🇷🇺 ANYCAST-AS89.104.95.0/24 Ru-Center route}
		A	89.104.95.36^{🇷🇺 ANYCAST-AS89.104.95.0/24 Ru-Center route}
NS	`ns8-l2.nic.ru`
		A	91.217.21.20^{🇷🇺 RU-CENTER-AS91.217.21.0/24 RU-CENTER}
			PTR	`ns8-l2.nic.ru`
MX	`mx02.nicmail.ru` ⭐
		A	91.189.116.13^{🇷🇺 RU-CENTER91.189.116.0/22 RU-NIC-HOSTING}
			PTR	`mx01.nicmail.ru`
		A	91.189.116.14^{🇷🇺 RU-CENTER91.189.116.0/22 RU-NIC-HOSTING}
			PTR	`mx01.nicmail.ru`
		A	91.189.116.15^{🇷🇺 RU-CENTER91.189.116.0/22 RU-NIC-HOSTING}
			PTR	`mx01.nicmail.ru`
		A	91.189.116.16^{🇷🇺 RU-CENTER91.189.116.0/22 RU-NIC-HOSTING}
			PTR	`mx01.nicmail.ru`
MX	`mx01.nicmail.ru`⁽¹⁰⁾
		A	91.189.116.13^{🇷🇺 RU-CENTER91.189.116.0/22 RU-NIC-HOSTING}
			PTR	`mx01.nicmail.ru`
		A	91.189.116.14^{🇷🇺 RU-CENTER91.189.116.0/22 RU-NIC-HOSTING}
			PTR	`mx01.nicmail.ru`
		A	91.189.116.15^{🇷🇺 RU-CENTER91.189.116.0/22 RU-NIC-HOSTING}
			PTR	`mx01.nicmail.ru`
		A	91.189.116.16^{🇷🇺 RU-CENTER91.189.116.0/22 RU-NIC-HOSTING}
			PTR	`mx01.nicmail.ru`
MX	`mx03.nicmail.ru`⁽²⁰⁾
		A	91.189.116.16^{🇷🇺 RU-CENTER91.189.116.0/22 RU-NIC-HOSTING}
			PTR	`mx01.nicmail.ru`
TXT	`v=spf1 redirect=nicmail.ru`
TXT	`_globalsign-domain-verification=L5UyrT1s3Owt-dTqB7c0H0ltLa7CmyHrpRiwpMjQ3Q`
SOA	`ns3-l2.nic.ru`dns@nic.ru 2023-03-25 #33

`tech`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns01.trs-dns.com` ⭐
	NS	`ns.trs-dns.com`
	NS	`ns01.trs-dns.net`
	NS	`ns10.trs-dns.info`
	NS	`ns10.trs-dns.org`
	SOA	`ns.trs-dns.com`trs-ops@tucows.com serial=1774670346

Same first word

build-sys.tech

DNS History

8 records (8 active, 0 former)

●NSns3-l2.nic.ru2026-03-01 → 2026-03-28 · 2 obs

● 2026-03-01 01:52:42
● 2026-03-28 04:22:44

●NSns4-cloud.nic.ru2026-03-24 → 2026-03-28 · 3 obs

○ 2026-03-01 01:52:42
● 2026-03-24 01:29:40
● 2026-03-28 04:22:44

●NSns4-l2.nic.ru2026-03-01 → 2026-03-28 · 2 obs

● 2026-03-01 01:52:42
● 2026-03-28 04:22:44

●NSns8-cloud.nic.ru2026-03-24 → 2026-03-28 · 3 obs

○ 2026-03-01 01:52:42
● 2026-03-24 01:29:40
● 2026-03-28 04:22:44

●NSns8-l2.nic.ru2026-03-01 → 2026-03-28 · 2 obs

● 2026-03-01 01:52:42
● 2026-03-28 04:22:44

●MXmx01.nicmail.ru2026-03-24 → 2026-03-28 · 2 obs

● 2026-03-24 01:29:40
● 2026-03-28 04:22:44

●MXmx02.nicmail.ru2026-03-24 → 2026-03-28 · 2 obs

● 2026-03-24 01:29:40
● 2026-03-28 04:22:44

●MXmx03.nicmail.ru2026-03-24 → 2026-03-28 · 2 obs

● 2026-03-24 01:29:40
● 2026-03-28 04:22:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
tech	ns01.trs-dns.com, ns01.trs-dns.net, ns10.trs-dns.org, ns10.trs-dns.info	8 records
build-sys.tech	ns3-l2.nic.ru, ns8-l2.nic.ru, ns4-l2.nic.ru	-

✅ Authoritative Response

Server:193.232.146.1

NS records: ns3-l2.nic.ru, ns8-l2.nic.ru, ns4-l2.nic.ru

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for build-sys.tech (unsigned zone)

⏱️ Timing

Total: 989ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	5	`ns3-l2.nic.ru, ns4-l2.nic.ru...`
MX	3	`mx02.nicmail.ru (pri: 5), mx01.nicmail.ru (pri: 10)...`
TXT	2	`v=spf1 redirect=nicmail.ru, _globalsign-domain-verification=L5UyrT1s`
SOA	1	`ns3-l2.nic.ru dns.nic.ru`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns01.trs-dns.com, ns01.trs-dns.net, ns10.trs-dns.org...)

Analysis

Name Servers

build-sys.tech is delegated to five name servers: ns3-l2.nic.ru, ns4-cloud.nic.ru, ns4-l2.nic.ru, ns8-cloud.nic.ru and ns8-l2.nic.ru.

At least part of the name servers for build-sys.tech are shared with other domains, for instance prodiod.ru, fm-craft.ru, festmoscow.ru, xn--h1aecgfmj1g.xn--p1ai and softalt.ru.

Host names by IP count:

Six IP numbers:

- ns4-cloud.nic.ru points to: 89.104.93.30, 89.104.93.33, 89.104.93.34, 89.104.95.30, 89.104.95.33 and 89.104.95.34

- ns8-cloud.nic.ru points to: 89.104.93.31, 89.104.93.35, 89.104.93.36, 89.104.95.31, 89.104.95.35 and 89.104.95.36

One IP number:

- ns3-l2.nic.ru points to: 193.232.146.1

- ns4-l2.nic.ru points to: 91.217.20.20

- ns8-l2.nic.ru points to: 91.217.21.20

Mail Servers

Three mail servers handle build-sys.tech: mx01.nicmail.ru, mx02.nicmail.ru and mx03.nicmail.ru.

build-sys.tech shares at least some mail servers with other domains, for example rnp.ru, zvukoshop.nichost.ru, taurauto.com, opt-cvetov.ru and mwsatcom.ru.