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Get (security) info about IP addresses

License: MIT License

Go 99.24% Makefile 0.18% Shell 0.59%

cli go ipaddress security tool

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Unnecessary downloads of the same data

$ checkip $(dig +short checkip.amazonaws.com)
checkip: wrong IP address: checkip.check-ip.aws.a2z.com.
checkip: wrong IP address: checkip.eu-west-1.prod.check-ip.aws.a2z.com.
checkip: downloading https://iptoasn.com/data/ip2asn-combined.tsv.gz
checkip: downloading https://iplists.firehol.org/files/firehol_level1.netset
checkip: downloading https://download.db-ip.com/free/dbip-city-lite-2022-10.mmdb.gz
checkip: downloading https://download.db-ip.com/free/dbip-city-lite-2022-10.mmdb.gz
checkip: downloading https://download.db-ip.com/free/dbip-city-lite-2022-10.mmdb.gz
checkip: downloading http://cinsscore.com/list/ci-badguys.txt
checkip: downloading https://iplists.firehol.org/files/firehol_level1.netset
checkip: downloading https://raw.githubusercontent.com/stamparm/ipsum/master/ipsum.txt
checkip: downloading https://raw.githubusercontent.com/stamparm/ipsum/master/ipsum.txt
checkip: downloading https://iptoasn.com/data/ip2asn-combined.tsv.gz
checkip: downloading https://iplists.firehol.org/files/firehol_level1.netset
checkip: downloading https://raw.githubusercontent.com/stamparm/ipsum/master/ipsum.txt
checkip: downloading https://iptoasn.com/data/ip2asn-combined.tsv.gz
checkip: downloading http://cinsscore.com/list/ci-badguys.txt
checkip: downloading https://download.db-ip.com/free/dbip-city-lite-2022-10.mmdb.gz
checkip: downloading http://cinsscore.com/list/ci-badguys.txt
checkip: downloading http://cinsscore.com/list/ci-badguys.txt
checkip: downloading https://raw.githubusercontent.com/stamparm/ipsum/master/ipsum.txt
checkip: downloading https://iplists.firehol.org/files/firehol_level1.netset
checkip: downloading https://iptoasn.com/data/ip2asn-combined.tsv.gz
checkip: downloading http://cinsscore.com/list/ci-badguys.txt
checkip: downloading https://download.db-ip.com/free/dbip-city-lite-2022-10.mmdb.gz
checkip: downloading https://iptoasn.com/data/ip2asn-combined.tsv.gz
checkip: downloading https://raw.githubusercontent.com/stamparm/ipsum/master/ipsum.txt
checkip: downloading https://iplists.firehol.org/files/firehol_level1.netset

[Feature request] Using IPinfo.io for IP information (IP Geolocation + ASN)

I would like to recommend ipinfo.io for the IP data.

Provides highly accurate IP geolocation backed by our probe network infrastructure.
Free tier access token supports 50,000 requests per month.
IPinfo supports HTTPS/SSL encryption on all endpoints.
Tokenless access grants 1,000 requests per day.
Includes ASN and hostname information. Supports bulk enrichment through a single API endpoint. We also have a comprehensive integration library.

Usage example:

curl https://ipinfo.io/8.8.8.8

{
    "ip": "8.8.8.8",
    "hostname": "dns.google",
    "anycast": true,
    "city": "Mountain View",
    "region": "California",
    "country": "US",
    "loc": "37.4056,-122.0775",
    "org": "AS15169 Google LLC",
    "postal": "94043",
    "timezone": "America/Los_Angeles"
}

Documentation: https://ipinfo.io/developers

Free IP databases: https://ipinfo.io/products/free-ip-database

nitefood/asn is mentioned in #41. The project is switching to IPinfo for their IP data as well: nitefood/asn#67 (comment)

Consider including IPinfo in the project for accurate data and generous free access. Please let me know what you think. Thank you very much.

Have a look at httpx

https://github.com/projectdiscovery/httpx

Consider limiting check.Type to Info, Sec and InfoSec

Consider rewrite or new project

remove checks that need registration
provide info also on FQDN
cli should be usable in shell pipelines (input from files and STDIN + performance)
JSON + text output

Review SAN values

What are those unreadable strings?

$ checkip -j 1.1.1.1 | jq -r '.checks[12].info.data.attributes.last_https_certificate.extensions'
{
  "subject_alternative_name": [
    "cloudflare-dns.com",
    "*.cloudflare-dns.com",
    "one.one.one.one",
    "\u0001\u0001\u0001\u0001",
    "\u0001\u0001",
    "\\xa2\\x9f$\\x01",
    "\\xa2\\x9f.\\x01",
    "&\u0006GG\u0011\u0011",
    "&\u0006GG\u0010\u0001",
    "GGd",
    "GGd"
  ]
}

Consider adding cleantalk

https://cleantalk.org/blacklists/as46664

Consider adding AbuseIPDB

https://www.abuseipdb.com/check-block/156.96.156.0/24

Better error handling

~~Rewrite error handling following https://earthly.dev/blog/golang-errors/~~
Ignore CheckName error when DNS name does not exist
~~Ignore CheckShodan 404 error~~

Consider adding censys check

Remove ThreatCrowd check if they don't fix their TLS cert

❯ checkip -a 142.251.209.14 > /dev/null
checkip: ThreatCrowd: Get "https://www.threatcrowd.org/searchApi/v2/ip/report?ip=142.251.209.14": x509: “*.otxb.io” certificate name does not match input

Use config file in addition to envvars for storing keys

Add flag to output JSON

Several people on reddit asked for flag that would make output in JSON. This might be useful within scripts/pipelines.

Implement caching

When running make run too many times I get:

checkip: calling https://www.virustotal.com/api/v3/ip_addresses/218.92.0.158: 429 Too Many Requests

Cache responses for some time to prevent this.

Check if something can be added from public-apis.org

https://github.com/public-apis/public-apis#security

Consider adding urlscan.io check

Doesn't work properly on Windows

The windows build doesn't function properly.

It tries using unix paths:

checkip.exe: IPSum: searching 1.1.1.1 in /var/tmp/ipsum.txt: open /var/tmp/ipsum.txt: The system cannot find the path specified.

checkip.exe: DBip: can't load DB file /var/tmp/dbip-city-lite.mmdb: open /var/tmp/dbip-city-lite.mmdb: The system cannot find the path specified.

checkip.exe: IPtoASN: searching 1.1.1.1 in /var/tmp/ip2asn-combined.tsv: open /var/tmp/ip2asn-combined.tsv: The system cannot find the path specified.

checkip.exe: CinsScore: searching 1.1.1.1 in /var/tmp/cins.txt: open /var/tmp/cins.txt: The system cannot find the path specified.

checkip.exe: MaxMind: open /var/tmp/GeoLite2-City.mmdb: The system cannot find the path specified.

Have a look at asn

https://github.com/nitefood/asn

Add checkip to awesome-go

add reference badge
add go report badge
make test coverage >= 80%
create pull request

Consider adding DB-IP Country Lite for geo location

https://db-ip.com/db/download/ip-to-country-lite

Scrape GreyNoise

e.g. https://viz.greynoise.io/ip/23.129.64.223

Consider adding ET subnets

https://rules.emergingthreats.net/fwrules/emerging-Block-IPs.txt

Consider adding FireHOL

https://iplists.firehol.org/ contains IP addresses of anonymous proxies (similar to TOR exit nodes)

Consider adding DShield API from SANS.edu Internet Storm Center

https://isc.sans.edu/api/

Consider adding AlienVault OTX

https://github.com/AlienVault-OTX/OTX-Go-SDK

Consider adding services from OSINT Framework

https://osintframework.com/ => IP address

Access denied in windows 11

i want to update version in my pc.

i download it with wget(windows) then extract it in previously directory.

PS C:\Portables\Tools> .\checkip.exe
Program 'checkip.exe' failed to run: Access is deniedAt line:1 char:1
+ .\checkip.exe
+ ~~~~~~~~~~~~~.
At line:1 char:1
+ .\checkip.exe
+ ~~~~~~~~~~~~~
    + CategoryInfo          : ResourceUnavailable: (:) [], ApplicationFailedException
    + FullyQualifiedErrorId : NativeCommandFailed

i search a clue about wich file are denies but no luck.

i have .checkip.yaml in same directory also i copied it in to my user path. c:\users\yunus.checkip.yaml

do you have any idea how can i run it. ?

Certificate error connecting to ThreadCrowd

$ checkip 1.1.1.1
checkip: ThreadCrowd: Get "https://www.threatcrowd.org/searchApi/v2/ip/report?ip=1.1.1.1": x509: “*.otxb.io” certificate name does not match input
<...SNIP...>

Consider adding Virus Total

https://developers.virustotal.com/v3.0/reference#ip-object

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