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6 dimensions · leaks / fingerprint / consistency

ASN lookup result for AS40021 Contabo Inc. — network size, BGP routing and registration

USAS40021Contabo Inc.IDC
WHOIS Topology

United States · ARINcontabo.com

AnycastRPKI filteringTor relaysVPN servicesVPS hosting

IPv4 addresses

151,552

94 announced prefixes

IPv6 addresses

3.96 × 10²⁹

5 announced prefixes

BGP neighbours

…

CAIDA rank

#13,331

Customer cone 1 ASNs

Estimated users

385K

APNIC Labs estimate

RPKI

83% valid

0 invalid · 17 not covered

Average purity

67

127 sampled IPs

IXPs / facilities

0 / 3

Operator self-reported

History

How prefixes were announced and changed hands, registration changes, and outage or hijack incidents.

Loading routing history…

IP ranges

Currently announced prefixes with their RIR registration and geolocation.

PrefixRPKIRegistrationGeolocationAddresses
13.140.32.0/20ValidDETT-20260819RIPEUSCarlstadtCross-border4,096
13.140.224.0/20ValidDETT-20261012RIPEUSCarlstadtCross-border4,096
144.126.128.0/20Valid—USSt Louis4,096
147.93.128.0/20ValidDETT-20241113RIPEUSSt LouisCross-border4,096
147.93.176.0/20ValidDETT-20241122RIPEUSCarlstadtCross-border4,096
157.173.192.0/20ValidDETT-20240515RIPEUSSt LouisCross-border4,096
207.244.224.0/20Valid—USSt Louis4,096
207.244.240.0/20Valid—USSt Louis4,096
209.126.0.0/20Valid—USSt Louis4,096
209.145.48.0/20Valid—USSt Louis4,096
217.216.80.0/20ValidDETT-20251105RIPEUSCarlstadtCross-border4,096
13.140.240.0/21ValidDETT-20261012RIPEUSSeattleCross-border2,048
31.220.96.0/21ValidDETT-20230217RIPEUSCarlstadtCross-border2,048
62.146.168.0/21ValidDEDE-TERRATRANSIT-20000922RIPEUSSeattleCross-border2,048
62.146.176.0/21ValidDETT-20230316RIPEUSSt LouisCross-border2,048
62.146.224.0/21ValidDETT-20230223RIPEUSCarlstadtCross-border2,048
66.94.96.0/21Valid—USCarlstadt2,048
66.94.104.0/21Valid—USCarlstadt2,048
66.94.120.0/21Valid—USSeattle2,048
80.190.72.0/21ValidDEDE-TERRATRANSIT-20020717RIPEUSCarlstadtCross-border2,048

/24 block profile

One square per /24: colour shows the risk type, shade how many addresses are flagged, stripes mark datacenter blocks. Click a square to see all 256 addresses.

/24s with data 263 / 592 （44%） · flagged 254

No risk flagsDatacenter (no flags)ProxyVPNAbuse / blocklistTorDarker = more flagged addresses; dashed = block screen only

217.216.80.0/2016/16 with data · 16 flagged

144.126.128.0/209/16 with data · 9 flagged

209.145.48.0/209/16 with data · 9 flagged

207.244.224.0/208/16 with data · 8 flagged

207.244.240.0/208/16 with data · 8 flagged

209.126.0.0/208/16 with data · 8 flagged

217.216.40.0/218/8 with data · 8 flagged

217.216.48.0/218/8 with data · 8 flagged

147.93.176.0/207/16 with data · 7 flagged

66.94.96.0/217/8 with data · 7 flagged

217.77.8.0/217/8 with data · 7 flagged

147.93.128.0/206/16 with data · 6 flagged

Hover a square for its numbers; click to see all 256 addresses.

Each prefix shows its 64 /24s with the most data. Built daily from lookups, neighbour sampling, public lists and block screening.

IP reputation

IPs from this network that CleanIP has analysed: purity, abuse reports and the riskiest /24 blocks.

Purity distribution

85–100 270–84 7550–69 380–49 12

2.38%

Share of IPv4 reported or blocklisted

3,602

Listed IPs

127

Analysed IPs

Flagged = VPN, proxy, Tor or purity below 50. Samples come from user lookups and neighbour sampling, not every address in this network.

Geography

Where this network’s IPv4 addresses are located.

  • US United States
  • DE Germany
Scope
Single country
In registered country
99.8%

Estimated by sampling IPv4 ranges against a geolocation database.

Traffic observation

AS40021 · Last 7 days
Mobile vs. Desktop
Desktop 62.2%Mobile 37.8%
Desktop62.2%Mobile37.8%
Bot vs. Human
Human 17.3%Bot 82.7%
Human17.3%Bot82.7%

Adoption & Usage

Adoption and usage of key protocols

Internet Protocol (IP) Version
IPv4 85.0%IPv6 15.0%15.0%IPv6
IPv485.0%IPv615.0%
HTTP Version
HTTP/1.x
44.7%HTTP/2
54.1%HTTP/3
1.2%
HTTP vs. HTTPS
97.4% HTTPS (encrypted)
Plain HTTP 2.6%
TLS Version
TLS 1.0/1.1< 0.1%TLS 1.25.2%TLS 1.393.6%QUIC1.2%

Security & Attacks

Insights into network and application layer attack traffic

Layer 7 Attacks
GET
94.0%POST
5.8%HEAD
0.1%Other
< 0.1%

BGP Announcements

Hourly BGP route announcements over the last 7 days

892,846
7-day total
64,573
Hourly peak

Data: Cloudflare Radar, licensed under CC BY-NC 4.0

Activity

Hourly traffic over the last 7 days, normalized to this network’s peak.

Fairly flat around the clock, typical of server or hosting networks.

00061218
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Times in UTCLessMore
Peak hour
13:00–14:00
Active hours
24 hrs
Weekend vs weekday
Weekdays heavier
Busiest day
Mon

Datacenter Presence

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BGP upstreams and neighbours

AS40021Standalone page
Loading upstreams and neighbours…

WHOIS record

The registry’s record for this AS number: holder, status, dates and contacts.

Sources

Where the information on this page comes from and when it was updated.

InformationSourceUpdated
Registered countryRIR daily delegation statistics2026-10-22
Registered address & allocation dateRIR registration data (RDAP)2026-10-07
Organization & company countryAS-to-organization data2026-10-21
Network typeCleanIP ASN canon2026-10-22
Exchanges & facilitiesOperator self-reported interconnection data2026-10-21
Announced prefixes & BGP neighboursPublic BGP routing data2026-10-22
IPv4 geographyGeolocation database—
RPKI validationRPKI ROA validation data2026-10-22
Rank & customer coneCAIDA AS Rank2026-10-01
Estimated users (APNIC)APNIC Labs user estimates2026-10-19
Network tagsPublic routing data community tags2026-10-22
IP reputationCleanIP lookups and neighbour sampling—

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Multi-source cross-checks · In-house reputation data · Real data only

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