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Autonomous System

AS37918

NTT, Inc.

Announced IPs
69,376
CIDR prefixes
5
ASN
AS37918

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

70/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
129.60.0.0/16 65.5K
0.1%
NTT, Inc. JP
192.68.240.0/21 2.0K
0.0%
NTT, Inc. JP
192.68.236.0/22 1.0K
0.0%
NTT, Inc. JP
192.68.248.0/23 512
0.0%
NTT, Inc. JP
192.68.235.0/24 256
0.0%
NTT, Inc. JP

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS37918 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
192.68.236.0/23 14,000 2026-09-13 03:25:40
129.60.0.0/16 12,770 2026-09-13 03:25:40
192.68.240.0/23 12,140 2026-09-13 03:25:40
192.68.246.0/23 12,090 2026-09-13 03:25:40
129.60.128.0/17 10,102 2026-09-13 03:25:40
192.68.242.0/24 10,045 2026-09-13 03:25:40
192.68.243.0/24 10,039 2026-09-13 03:25:40
192.68.239.0/24 10,037 2026-09-13 03:25:40
192.68.235.0/24 10,031 2026-09-13 03:25:40
192.68.238.0/24 10,027 2026-09-13 03:25:40
192.68.249.0/24 10,011 2026-09-13 03:25:40
192.68.245.0/24 10,002 2026-09-13 03:25:40
192.68.244.0/24 9,985 2026-09-13 03:25:40
192.68.248.0/24 9,981 2026-09-13 03:25:40
129.60.0.0/17 9,979 2026-09-13 03:25:40
192.68.246.0/24 9,899 2026-09-13 03:25:40
192.68.236.0/24 9,822 2026-09-13 03:25:40
192.68.241.0/24 9,820 2026-09-13 03:25:40
192.68.237.0/24 9,818 2026-09-13 03:25:40
192.68.240.0/24 9,811 2026-09-13 03:25:40
192.68.247.0/24 9,706 2026-09-13 03:25:39
192.68.248.0/28 42 2026-09-09 07:48:00

Frequently Asked Questions

What is AS37918?

AS37918 is an Autonomous System Number assigned to NTT, Inc.. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS37918 announce?

AS37918 announces 69.4K IPv4 addresses distributed across 5 routed CIDR prefixes. The network is registered in Japan.

Who operates AS37918?

AS37918 is operated by NTT, Inc.. The organization is based in Japan. You can view all IP ranges and related ASNs on the organization page.

What country is AS37918 registered in?

AS37918 is registered in Japan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-09-13 03:55:57 UTC
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