IPv4 address 131.243.0.245 - whois, reputation, ping and tools

Summary

Hostname: —
ASN: —
Organization: Lawrence Berkeley National Laboratory
Network: LBL-IP-NET2
Range: 131.243.0.0 - 131.243.255.255
/24 block: 131.243.0.0/24
Country: US
Blacklists: 0 of 14
Abuse contact: [email protected]

Presence of 131.243.0.245 in blacklists

List	Status
zen.spamhaus.org	Not listed
bl.spamcop.net	Not listed
black.junkemailfilter.com	Not listed
multi.surbl.org	Not listed
dnsbl.sorbs.net	Not listed
b.barracudacentral.org	Not listed
dnsbl.tornevall.org	Not listed
dnsbl.httpbl.org	Not listed
dnsbl-1.uceprotect.net	Not listed
dnsbl-2.uceprotect.net	Not listed
dnsbl-3.uceprotect.net	Not listed
v4.fullbogons.cymru.com	Not listed
bl.blocklist.de	Not listed
rbl.blockedservers.com	Not listed

What is a blacklist (RBL)?

An RBL (Real-time Blackhole List), also known as a DNSBL (DNS-based Blackhole List), is a mechanism used to fight spam by blocking e-mails coming from sources known to send spam. RBLs are databases listing the IP addresses deemed responsible for sending unsolicited e-mail. Mail server administrators use these lists to filter incoming e-mails by checking whether the sender's IP address appears in one or more RBLs. If it does, the e-mail may be rejected or subjected to additional checks.

There are different types of RBLs, each with its own criteria for listing IP addresses. Some focus on IP addresses that send spam directly, while others list IP addresses belonging to networks known to host computers infected with malware and used as bots to send spam. RBL operators keep their lists up to date through automatic and manual contributions, and IP address owners can often request removal from a list if they believe the listing is unjustified.

WHOIS data for 131.243.0.245

# ARIN WHOIS data and services are subject to the Terms of Use

# available at: https://www.arin.net/resources/registry/whois/tou/

# If you see inaccuracies in the results, please report at

# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/

NetRange: 131.243.0.0 - 131.243.255.255

CIDR: 131.243.0.0/16

NetName: LBL-IP-NET2

NetHandle: NET-131-243-0-0-1

Parent: NET131 (NET-131-0-0-0-0)

NetType: Direct Allocation

OriginAS:

Organization: Lawrence Berkeley National Laboratory (LBNL-Z)

RegDate: 1989-02-08

Updated: 2024-12-30

Comment: Please direct SPAM queries to [email protected].

Comment: Please direct ABUSE queries to [email protected].

Ref: https://rdap.arin.net/registry/ip/131.243.0.0

OrgName: Lawrence Berkeley National Laboratory

OrgId: LBNL-Z

Address: One Cyclotron Road

City: Berkeley

StateProv: CA

PostalCode: 94720

Country: US

RegDate: 2019-02-11

Updated: 2026-06-11

Comment: Please direct SPAM related queries to [email protected]

Comment: Please direct ABUSE related queries to [email protected]

Ref: https://rdap.arin.net/registry/entity/LBNL-Z

OrgTechHandle: SIMON407-ARIN

OrgTechName: Simon, Richard

OrgTechPhone: +1-510-486-5585

OrgTechEmail: [email protected]

OrgTechRef: https://rdap.arin.net/registry/entity/SIMON407-ARIN

OrgAbuseHandle: CPP-ARIN

OrgAbuseName: Computer Protection Program

OrgAbusePhone: +1-510-486-7770

OrgAbuseEmail: [email protected]

OrgAbuseRef: https://rdap.arin.net/registry/entity/CPP-ARIN

# ARIN WHOIS data and services are subject to the Terms of Use

# available at: https://www.arin.net/resources/registry/whois/tou/

# If you see inaccuracies in the results, please report at

# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/

Related domain names

Domains mentioned in the reverse DNS and the WHOIS of 131.243.0.245.

lbl.gov · website

What is an IP address?

An IP address is a unique identifier on the internet that identifies a server or an internet user. Here the IP address is 131.243.0.245: it may be the unique address used to reach a website, or the unique address of an internet user.

An SMTP server (a server used to send e-mails) must have a reverse DNS record associated with its IP address

131.243.0.245