microbridge.jp - dns.ninja

`microbridge.jp`

DNSSEC	⚠️ Not signed
A	49.212.235.49^{🇯🇵 SAKURA-C49.212.0.0/16 (7/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan}
		PTR	`www3339.sakura.ne.jp`
NS	`ns.microbridge.jp` ⭐
		A	2001:e42:102:1106:153:121:45:73^{🇯🇵 SAKURA-B2001:e40::/30 SAKURA Internet Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka 530-0011, JAPAN}
			PTR	`153.121.45.73.v6.sakura.ne.jp`
		A	153.121.45.73^{🇯🇵 SAKURA-B153.121.32.0/19 (TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-14 Minami Honmachi, Chuo-ku, Osaka 541-0054, Japan}
			PTR	`venus.microbridge.jp`
NS	`2nd.dnsv.jp`
		A	2400:8500:1301:2611:1001::142^{🇯🇵 GMO-INTERNET2400:8500:1000::/36 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
			PTR	`2nd.dnsv.jp`
		A	163.44.76.142^{🇯🇵 GMO-INTERNET163.44.64.0/19 GMO Internet,Inc Cerulean Tower, 11F Sakuragaokacho-26-1 Shibuya-ku, Tokyo 150-8512, Japan}
			PTR	`2nd.dnsv.jp`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c17::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bl-in-f26.1e100.net`
		A	142.251.16.26^{🇺🇸 Google142.251.16.0/24}
			PTR	`bl-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽²⁰⁾
		A	2800:3f0:4003:c14::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	192.178.234.26^{🇺🇸 Google192.178.0.0/15}
			PTR	`ncsclj-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽²⁰⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`aspmx2.googlemail.com`⁽³⁰⁾
		A	2800:3f0:4003:c14::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	192.178.234.26^{🇺🇸 Google192.178.0.0/15}
			PTR	`ncsclj-in-f26.1e100.net`
MX	`aspmx3.googlemail.com`⁽³⁰⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`aspmx4.googlemail.com`⁽³⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
MX	`aspmx5.googlemail.com`⁽³⁰⁾
		A	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`MS=3B40EF60C23B8BAB80BF5A4EE8D3409F412CF398`
TXT	`v=spf1 ip4:219.117.255.56/29 include:aspmx.googlemail.com ~all`
SOA	`ns.microbridge.jp`root@microbridge.jp serial=36

`jp`

	DNSSEC	🔒 Signed (DS record present)
	NS	`z.dns.jp` ⭐
	NS	`a.dns.jp`
	NS	`b.dns.jp`
	NS	`c.dns.jp`
	NS	`d.dns.jp`
	NS	`e.dns.jp`
	NS	`f.dns.jp`
	NS	`g.dns.jp`
	NS	`h.dns.jp`
	SOA	`z.dns.jp`root@dns.jp serial=1786368602

Previously NS for

microbridge.jp

Subdomains

venus.microbridge.jp

kitaro.microbridge.jp

ns.microbridge.jp

Same first word

microbridge.jp

DNS History

12 records (10 active, 2 former)

●NS2nd.dnsv.jp2015-06-06 → 2026-08-10 · 2 obs

● 2015-06-06 05:15:02
● 2026-08-10 13:35:52

○NSmicrobridge.jp2015-06-06 → 2017-08-19 · 4 obs

● 2015-06-06 05:15:02
● 2017-08-19 09:16:32
○ 2026-04-24 03:54:34
○ 2026-08-10 13:35:52

●NSns.microbridge.jp2015-06-06 → 2026-08-10 · 2 obs

● 2015-06-06 05:15:02
● 2026-08-10 13:35:52

●MXalt1.aspmx.l.google.com2015-06-06 → 2026-08-10 · 2 obs

● 2015-06-06 05:15:02
● 2026-08-10 13:35:52

●MXalt2.aspmx.l.google.com2015-06-06 → 2026-08-10 · 2 obs

● 2015-06-06 05:15:02
● 2026-08-10 13:35:52

●MXaspmx.l.google.com2015-06-06 → 2026-08-10 · 2 obs

● 2015-06-06 05:15:02
● 2026-08-10 13:35:52

●MXaspmx2.googlemail.com2015-06-06 → 2026-08-10 · 2 obs

● 2015-06-06 05:15:02
● 2026-08-10 13:35:52

●MXaspmx3.googlemail.com2015-06-06 → 2026-08-10 · 2 obs

● 2015-06-06 05:15:02
● 2026-08-10 13:35:52

●MXaspmx4.googlemail.com2015-06-06 → 2026-08-10 · 2 obs

● 2015-06-06 05:15:02
● 2026-08-10 13:35:52

●MXaspmx5.googlemail.com2015-06-06 → 2026-08-10 · 2 obs

● 2015-06-06 05:15:02
● 2026-08-10 13:35:52

○A219.117.255.582015-06-06 → 2017-08-19 · 4 obs

● 2015-06-06 05:15:02
● 2017-08-19 09:16:32
○ 2026-04-24 03:54:34
○ 2026-08-10 13:35:52

●A49.212.235.492026-04-24 → 2026-08-10 · 3 obs

○ 2017-08-19 09:16:32
● 2026-04-24 03:54:34
● 2026-08-10 13:35:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
jp	f.dns.jp, g.dns.jp, d.dns.jp, h.dns.jp...	-
microbridge.jp	2nd.dnsv.jp, ns.microbridge.jp	1 record

✅ Authoritative Response

Server:153.121.45.73

NS records: 2nd.dnsv.jp, ns.microbridge.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for microbridge.jp (unsigned zone)

⏱️ Timing

Total: 1177ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`49.212.235.49`
NS	2	`ns.microbridge.jp, 2nd.dnsv.jp`
MX	7	`alt2.aspmx.l.google.com (pri: 20), aspmx2.googlemail.com (pri: 30)...`
TXT	2	`MS=3B40EF60C23B8BAB80BF5A4EE8D3409F412CF, v=spf1 ip4:219.117.255.56/29 include:asp`
SOA	1	`ns.microbridge.jp root.microbridge.jp`

📌 Glue Records Collected

Total: 1

In-bailiwick: 1 (ns.microbridge.jp)

Analysis

Hierarchy

The domain microbridge.jp is parent to venus.microbridge.jp, kitaro.microbridge.jp and ns.microbridge.jp.

IP Addresses

microbridge.jp resolves to just one IP address, 49.212.235.49.

Two other host names, along with sikorsky.sakura.ne.jp, tanuya.com and ibnip.com, also share IP numbers with microbridge.jp.

Name Servers

Two name servers handle the delegation for microbridge.jp: 2nd.dnsv.jp and ns.microbridge.jp.

At least some of microbridge.jp's name servers are shared with other domains, for example wishkobetsu.jp, nagata-ss.co.jp, nozn.net and two more.

These name servers tend to co-occur with ns1.dns.ne.jp, ns2.dns.ne.jp, sv.i-fan.jp and 3 other name servers in the same DNS delegations.

2nd.dnsv.jp and ns.microbridge.jp both carry two IP addresses. The A records for 2nd.dnsv.jp are 163.44.76.142 and 2400:8500:1301:2611:1001::142; the A records for ns.microbridge.jp are 153.121.45.73 and 2001:e42:102:1106:153:121:45:73.

Mail Servers

microbridge.jp uses 7 mail servers for delivery: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and 4 other.

There is at least a partial MX overlap between microbridge.jp and other domains, including helpisontheway.us, viewings.co, martincsekzsolt.hu and two others.

These mail servers tend to appear in combination with mail servers aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and 3 others.

Host names that have two IP addresses:

aspmx2.googlemail.com resolves to two addresses: 192.178.234.26 and 2800:3f0:4003:c14::1b.

aspmx3.googlemail.com resolves to two addresses: 172.253.116.27 and 2a00:1450:400b:c02::1a.

aspmx4.googlemail.com resolves to two addresses: 192.178.223.26 and 2a00:1450:4009:c0f::1b.

aspmx5.googlemail.com resolves to two addresses: 172.253.157.26 and 2a00:1450:400c:c23::1a.

aspmx.l.google.com resolves to two addresses: 142.251.16.26 and 2607:f8b0:4004:c17::1a.

alt1.aspmx.l.google.com resolves to two addresses: 192.178.234.26 and 2800:3f0:4003:c14::1b.

alt2.aspmx.l.google.com resolves to two addresses: 172.253.116.26 and 2a00:1450:400b:c02::1a.

aspmx2.googlemail.com along with alt1.aspmx.l.google.com each resolve to 2800:3f0:4003:c14::1b IP addresses.

aspmx2.googlemail.com along with alt1.aspmx.l.google.com each resolve to 192.178.234.26 IP addresses.

aspmx3.googlemail.com along with alt2.aspmx.l.google.com each resolve to 2a00:1450:400b:c02::1a IP addresses.