ASN AS40623 is an Autonomous System Number used to identify a network for BGP internet routing.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

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AS40623 Office of Oceanic and Atmospheric Research Geophysical Fluid Dynamics Laboratory

Q: Who manages ASN AS40623?

AS40623 is listed under Office of Oceanic and Atmospheric Research Geophysical Fluid Dynamics Laboratory.

ASN Lookup Tool

Office of Oceanic and Atmospheric Research Geophysical Fluid Dynamics Laboratory noaa.gov

US 4 Routes

AS Data

AS40623

AS40623 – Office of Oceanic and Atmospheric Research Geophysical Fluid Dynamics Laboratory

AS Number	40623
AS Name	GFDL
Organization	Office of Oceanic and Atmospheric Research Geophysical Fluid Dynamics Laboratory (gfdl)
Country	US
Website	noaa.gov
Number of IPv4 Routes	2
Number of IPv6 Routes	2
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	2008-02-14

ASN Intelligence API for production workflows

Use ASN data for AS40623 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
140.208.0.0/18	AS40623	Office of Oceanic and Atmospheric Research Geophysical Fluid Dynamics Laboratory	Office of Oceanic and Atmospheric Research Geophysical Fluid Dynamics Laboratory	16384
2610:20:9120::/48	AS40623	Office of Oceanic and Atmospheric Research Geophysical Fluid Dynamics Laboratory	National Oceanic and Atmospheric Administration	~1×10²⁴
140.208.144.0/20	AS40623	Office of Oceanic and Atmospheric Research Geophysical Fluid Dynamics Laboratory	Office of Oceanic and Atmospheric Research Geophysical Fluid Dynamics Laboratory	4096
2610:20:8020::/44	AS40623	Office of Oceanic and Atmospheric Research Geophysical Fluid Dynamics Laboratory	National Oceanic and Atmospheric Administration	~19×10²⁴

Raw Whois Response

#
# 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/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       40623
ASName:         GFDL
ASHandle:       AS40623
RegDate:        2008-02-14
Updated:        2023-01-23
Comment:        
Comment:        www.gfdl.noaa.gov
Comment:        Operations Staff - 24x7 (609)452-6560
Comment:        Security related issues can be mailed to oar.gfdl.itso@noaa.gov
Ref:            https://rdap.arin.net/registry/autnum/40623


OrgName:        Office of Oceanic and Atmospheric Research - Geophysical Fluid Dynamics Laboratory
OrgId:          GFDL
Address:        201 Forrestal Rd
Address:        Princeton, NJ
City:           Princeton
StateProv:      NJ
PostalCode:     08542
Country:        US
RegDate:        1990-01-24
Updated:        2022-11-23
Ref:            https://rdap.arin.net/registry/entity/GFDL


OrgTechHandle: WILSO1108-ARIN
OrgTechName:   Wilson, Chan 
OrgTechPhone:  +1-608-216-5689 
OrgTechEmail:  chanwilson@gmail.com
OrgTechRef:    https://rdap.arin.net/registry/entity/WILSO1108-ARIN

OrgAbuseHandle: WILSO1108-ARIN
OrgAbuseName:   Wilson, Chan 
OrgAbusePhone:  +1-608-216-5689 
OrgAbuseEmail:  chanwilson@gmail.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/WILSO1108-ARIN

OrgTechHandle: SIDHU31-ARIN
OrgTechName:   Sidhu, Puneet 
OrgTechPhone:  +1-609-452-5357 
OrgTechEmail:  puneet.sidhu@noaa.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/SIDHU31-ARIN

RTechHandle: SIDHU31-ARIN
RTechName:   Sidhu, Puneet 
RTechPhone:  +1-609-452-5357 
RTechEmail:  puneet.sidhu@noaa.gov
RTechRef:    https://rdap.arin.net/registry/entity/SIDHU31-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/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.arin.net",
  "aut_nums" : [ {
    "aut_num" : "40623",
    "as_handle" : "AS40623",
    "as_name" : "GFDL",
    "tech_contacts" : [ "WILSO1108-ARIN", "SIDHU31-ARIN", "SIDHU31-ARIN" ],
    "abuse_contacts" : [ "WILSO1108-ARIN" ],
    "date_created" : "2008-02-14",
    "date_updated" : "2023-01-23",
    "source" : "https://rdap.arin.net/registry/autnum/40623"
  } ],
  "organization" : {
    "handle" : "GFDL",
    "name" : "Office of Oceanic and Atmospheric Research - Geophysical Fluid Dynamics Laboratory",
    "address" : [ "201 Forrestal Rd", "Princeton, NJ", "Princeton", "NJ", "08542", "US" ],
    "street" : "Forrestal Rd",
    "city" : "Princeton",
    "state" : "NJ",
    "zip_code" : "08542",
    "country" : [ "US" ],
    "date_created" : "1990-01-24",
    "date_updated" : "2022-11-23",
    "source" : "https://rdap.arin.net/registry/entity/GFDL",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "WILSO1108-ARIN",
    "name" : "Wilson, Chan",
    "email" : [ "chanwilson@gmail.com" ],
    "phone" : [ "+1-608-216-5689" ],
    "source" : "https://rdap.arin.net/registry/entity/WILSO1108-ARIN"
  }, {
    "handle" : "SIDHU31-ARIN",
    "name" : "Sidhu, Puneet",
    "email" : [ "puneet.sidhu@noaa.gov" ],
    "phone" : [ "+1-609-452-5357" ],
    "source" : "https://rdap.arin.net/registry/entity/SIDHU31-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "WILSO1108-ARIN",
    "name" : "Wilson, Chan",
    "email" : [ "chanwilson@gmail.com" ],
    "phone" : [ "+1-608-216-5689" ],
    "source" : "https://rdap.arin.net/registry/entity/WILSO1108-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS3477	National Oceanic and Atmospheric Administration	US

Upstreams

AS Number	Description	Country
AS3477	National Oceanic and Atmospheric Administration	US