Autonomous System details

AS3477

National Oceanic and Atmospheric Administration · noaa.gov

United States

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AS3477 – National Oceanic and Atmospheric Administration

Field	Value
Country	United States
Website	noaa.gov
Hosted domains	27
IPv4 addresses	324,096
IPv6 addresses	635,844,206,232,871,134,750,900,000,000
ASN type	Government
Registry	arin
Allocated	32 years ago on Mar 08, 1994
Updated	6 years ago on Sep 04, 2020

Netblock	Company	Num of IPs
140.90.0.0/16	National Oceanic and Atmospheric Administration	65,536
140.172.0.0/16	National Oceanic and Atmospheric Administration	65,536
155.206.0.0/16	National Oceanic and Atmospheric Administration	65,536
161.55.0.0/16	National Oceanic and Atmospheric Administration	65,536
137.75.64.0/18	National Oceanic and Atmospheric Administration	16,384
205.156.0.0/18	National Oceanic and Atmospheric Administration	16,384
198.206.32.0/19	National Weather Service Eastern Region Headquarters	8,192
140.208.192.0/20	Office of Oceanic and Atmospheric Research - Geophysical Fluid Dynamics Laboratory	4,096
137.75.88.0/21	National Oceanic and Atmospheric Administration	2,048
137.75.68.0/22	National Oceanic and Atmospheric Administration	1,024
137.75.72.0/22	National Oceanic and Atmospheric Administration	1,024
137.75.76.0/22	National Oceanic and Atmospheric Administration	1,024
137.75.80.0/22	National Oceanic and Atmospheric Administration	1,024
137.75.96.0/22	National Oceanic and Atmospheric Administration	1,024
137.75.100.0/22	National Oceanic and Atmospheric Administration	1,024
137.75.108.0/22	National Oceanic and Atmospheric Administration	1,024
137.75.112.0/22	National Oceanic and Atmospheric Administration	1,024
137.75.116.0/22	National Oceanic and Atmospheric Administration	1,024
137.75.224.0/22	National Oceanic and Atmospheric Administration	1,024
140.208.252.0/22	National Oceanic and Atmospheric Administration	1,024
161.55.56.0/23	National Oceanic and Atmospheric Administration	512
199.242.232.0/23	National Oceanic and Atmospheric Administration	512
204.193.246.0/23	U.S. Department of Commerce	512
137.75.82.0/24	National Oceanic and Atmospheric Administration	256
137.75.106.0/24	National Oceanic and Atmospheric Administration	256
137.75.120.0/24	National Oceanic and Atmospheric Administration	256
140.90.28.0/24	National Oceanic and Atmospheric Administration	256
140.90.101.0/24	National Oceanic and Atmospheric Administration	256
140.90.190.0/24	National Oceanic and Atmospheric Administration	256
140.208.253.0/24	National Oceanic and Atmospheric Administration	256
151.207.8.0/24	United States Patent and Trademark Office	256
151.207.9.0/24	United States Patent and Trademark Office	256
151.207.12.0/24	United States Patent and Trademark Office	256
151.207.13.0/24	United States Patent and Trademark Office	256
161.55.224.0/24	National Oceanic and Atmospheric Administration	256
165.92.182.0/24	National Oceanic and Atmospheric Administration	256
165.92.184.0/24	National Oceanic and Atmospheric Administration	256
165.92.186.0/24	National Oceanic and Atmospheric Administration	256
165.92.187.0/24	National Oceanic and Atmospheric Administration	256
165.92.222.0/24	National Oceanic and Atmospheric Administration	256
192.35.128.0/24	National Oceanic and Atmospheric Administration	256
192.35.129.0/24	National Oceanic and Atmospheric Administration	256
192.46.108.0/24	DOC/NOAA/NWS	256
192.58.1.0/24	National Oceanic and Atmospheric Administration	256
192.58.2.0/24	National Oceanic and Atmospheric Administration	256
192.58.3.0/24	National Oceanic and Atmospheric Administration	256
192.67.97.0/24	National Oceanic and Atmospheric Administration	256
192.67.134.0/24	National Oceanic and Atmospheric Administration	256
192.94.173.0/24	Great Lakes Environmental Research Laboratory	256
192.111.123.0/24	Atlantic Oceanographic and Meteorological Laboratory	256
192.133.29.0/24	National Oceanic and Atmospheric Administration	256
192.153.129.0/24	National Oceanic and Atmospheric Administration	256
198.51.11.0/24	National Telecommunications and Information Administration	256
198.180.147.0/24	National Oceanic and Atmospheric Administration	256
198.200.151.0/24	National Weather Service Western Region Headquarters	256
199.104.104.0/24	National Weather Service Western Region Headquarters	256
199.104.105.0/24	National Weather Service Western Region Headquarters	256
199.242.231.0/24	National Oceanic and Atmospheric Administration	256
204.145.202.0/24	National Weather Service Western Region Headquarters	256
204.193.241.0/24	U.S. Department of Commerce	256
204.193.242.0/24	U.S. Department of Commerce	256
204.193.244.0/24	U.S. Department of Commerce	256
204.193.245.0/24	U.S. Department of Commerce	256
204.228.175.0/24	National Weather Service Western Region Headquarters	256
204.228.176.0/24	National Weather Service Western Region Headquarters	256
204.228.177.0/24	National Weather Service Western Region Headquarters	256
204.228.178.0/24	National Weather Service Western Region Headquarters	256
204.228.179.0/24	National Weather Service Western Region Headquarters	256
204.228.180.0/24	National Weather Service Western Region Headquarters	256
204.228.181.0/24	National Weather Service Western Region Headquarters	256
204.228.182.0/24	National Weather Service Western Region Headquarters	256
204.228.183.0/24	National Weather Service Western Region Headquarters	256
204.228.184.0/24	National Weather Service Western Region Headquarters	256
204.228.185.0/24	National Weather Service Western Region Headquarters	256
204.228.186.0/24	National Weather Service Western Region Headquarters	256
204.228.187.0/24	National Weather Service Western Region Headquarters	256
204.228.188.0/24	National Weather Service Western Region Headquarters	256
204.228.189.0/24	National Weather Service Western Region Headquarters	256
204.228.190.0/24	National Weather Service Western Region Headquarters	256
204.228.191.0/24	National Weather Service Western Region Headquarters	256
205.159.118.0/24	U.S. Department of Commerce	256
205.166.33.0/24	National Oceanic and Atmospheric Administration	256
205.167.24.0/24	National Oceanic and Atmospheric Administration	256
205.167.25.0/24	National Oceanic and Atmospheric Administration	256
206.197.238.0/24	U.S. Department of Commerce	256

Netblock	Company
2601:a000::/32	National Oceanic and Atmospheric Administration
2601:a002::/32	National Oceanic and Atmospheric Administration
2601:a004::/32	NOAABO
2601:a005::/32	National Oceanic and Atmospheric Administration
2601:a008::/32	National Oceanic and Atmospheric Administration
2601:a010::/32	National Oceanic and Atmospheric Administration
2601:a012::/32	NOAABO
2601:a013::/32	National Oceanic and Atmospheric Administration
2610:20:8800::/38	National Oceanic and Atmospheric Administration
2610:20:9200::/40	National Oceanic and Atmospheric Administration
2610:20:9300::/40	National Oceanic and Atmospheric Administration
2607:9bc0:1010::/44	First Responder Network Authority
2607:9bc0:1020::/44	First Responder Network Authority
2607:9bc0:1030::/44	First Responder Network Authority
2610:20:8040::/44	National Oceanic and Atmospheric Administration
2610:20:8c00::/44	National Oceanic and Atmospheric Administration
2610:20:8c20::/44	National Oceanic and Atmospheric Administration
2610:20:90a0::/44	National Oceanic and Atmospheric Administration
2610:20:9008::/45	National Oceanic and Atmospheric Administration
2602:810:d004::/46	United States Patent and Trademark Office
2620:12e:b000::/46	National Telecommunications and Information Administration
2610:20:900e::/47	National Oceanic and Atmospheric Administration
2601:a002:5f::/48	National Oceanic and Atmospheric Administration
2610:20:90e2::/48	National Oceanic and Atmospheric Administration
2610:20:9124::/48	National Oceanic and Atmospheric Administration
2610:20:9147::/48	National Oceanic and Atmospheric Administration

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WHOIS Details

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                                                ASHandle:       AS3477
                                                OrgID:          AS3477
                                                ASName:         AS3477
                                                ASNumber:       AS3477
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are 27 domain names hosted across 14 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
137.75.88.7	████████	12
137.75.88.52	████████	11
140.172.184.1	██████████	2
137.75.111.158	██████████	1
137.75.101.20	██████████	1
161.55.88.75	██████████	1
137.75.121.202	██████████	1
140.172.190.2	██████████	1
137.75.121.228	██████████	1
140.172.200.41	██████████	1

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Peers

There are 12 peers for this ASN.

Peers	Name
AS11956	National Oceanic and Atmospheric Administration
AS12076	Microsoft Corporation
AS16550	Google LLC
AS26100	National Oceanic and Atmospheric Administration
AS2648	National Oceanic and Atmospheric Administration
AS30687	National Weather Service Southern Region Headquarters
AS33343	U.S. Department of Commerce, HQ and ITA
AS3635	U.S. Department of Commerce, Bureau of Economic Analysis
AS40623	Office of Oceanic and Atmospheric Research - Geophysical Fluid Dynamics Laboratory
AS49	National Institute of Standards and Technology
AS5744	United States Patent and Trademark Office
AS6629	National Oceanic and Atmospheric Administration

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ASN API & Database

Upstreams

There are 2 upstreams for this ASN.

upstreams	Name
AS11956	National Oceanic and Atmospheric Administration
AS26100	National Oceanic and Atmospheric Administration

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ASN API & Database

Downstreams

There are 10 downstreams for this ASN.

Downstreams	Name
AS12076	Microsoft Corporation
AS16550	Google LLC
AS2648	National Oceanic and Atmospheric Administration
AS30687	National Weather Service Southern Region Headquarters
AS33343	U.S. Department of Commerce, HQ and ITA
AS3635	U.S. Department of Commerce, Bureau of Economic Analysis
AS40623	Office of Oceanic and Atmospheric Research - Geophysical Fluid Dynamics Laboratory
AS49	National Institute of Standards and Technology
AS5744	United States Patent and Trademark Office
AS6629	National Oceanic and Atmospheric Administration

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ASN API & Database

Pingable IPs

157 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
205.156.7.189	AS3477 National Oceanic and Atmospheric Administration	`2.90ms` from Ashburn, US
140.90.86.101	AS3477 National Oceanic and Atmospheric Administration	`2.96ms` from Ashburn, US
140.208.202.17	AS3477 National Oceanic and Atmospheric Administration	`11.40ms` from Ashburn, US
140.172.2.133	AS3477 National Oceanic and Atmospheric Administration	`1.70ms` from Denver, US
2610:20:900c:4003::7	AS3477 National Oceanic and Atmospheric Administration	`0.68ms` from Denver, US
2601:a000:2::3	AS3477 National Oceanic and Atmospheric Administration	`2.54ms` from Ashburn, US
205.156.32.113	AS3477 National Oceanic and Atmospheric Administration	`2.74ms` from Ashburn, US
140.172.188.254	AS3477 National Oceanic and Atmospheric Administration	`1.69ms` from Denver, US
140.172.194.53	AS3477 National Oceanic and Atmospheric Administration	`1.93ms` from Denver, US
137.75.93.241	AS3477 National Oceanic and Atmospheric Administration	`2.39ms` from Ashburn, US
2620:12e:b000::1	AS3477 National Oceanic and Atmospheric Administration	`9.85ms` from Ashburn, US
205.167.24.66	AS3477 National Oceanic and Atmospheric Administration	`16.10ms` from Ashburn, US
205.156.5.97	AS3477 National Oceanic and Atmospheric Administration	`2.50ms` from Ashburn, US
192.111.123.251	AS3477 National Oceanic and Atmospheric Administration	`28.90ms` from Ashburn, US
140.208.254.65	AS3477 National Oceanic and Atmospheric Administration	`3.62ms` from Ashburn, US
137.75.121.2	AS3477 National Oceanic and Atmospheric Administration	`34.12ms` from Denver, US
137.75.76.11	AS3477 National Oceanic and Atmospheric Administration	`0.16ms` from Seattle, US
140.208.253.9	AS3477 National Oceanic and Atmospheric Administration	`1.64ms` from Ashburn, US
140.172.186.254	AS3477 National Oceanic and Atmospheric Administration	`1.64ms` from Denver, US
140.90.73.249	AS3477 National Oceanic and Atmospheric Administration	`3.09ms` from Ashburn, US
205.167.25.66	AS3477 National Oceanic and Atmospheric Administration	`15.86ms` from Ashburn, US
140.172.244.151	AS3477 National Oceanic and Atmospheric Administration	`2.00ms` from Denver, US
140.172.3.31	AS3477 National Oceanic and Atmospheric Administration	`1.65ms` from Denver, US
161.55.65.4	AS3477 National Oceanic and Atmospheric Administration	`0.94ms` from Seattle, US
199.242.232.253	AS3477 National Oceanic and Atmospheric Administration	`29.02ms` from Ashburn, US

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
23.97.236.101	AS8075 Microsoft Corporation	`0.26ms` from Amsterdam, NL
41.69.61.21	AS24835 Vodafone Data	`13.03ms` from Cairo, EG
34.89.216.133	AS396982 Google LLC	`0.09ms` from Frankfurt am Main, DE
123.18.24.117	AS45899 VNPT Corp	`2.92ms` from Hanoi, VN
111.43.212.181	AS132525 HeiLongJiang Mobile Communication Company Limited	`2.44ms` from Harbin, CN
138.19.165.245	AS9269 Hong Kong Broadband Network Ltd.	`0.44ms` from Hong Kong, HK
222.117.14.229	AS4766 Korea Telecom	`1.71ms` from Incheon, KR
64.130.46.197	AS20326 TeraSwitch Networks Inc.	`0.20ms` from London, GB
47.180.30.165	AS5650 Frontier Communications of America, Inc.	`3.23ms` from Los Angeles, US
104.63.55.165	AS7018 AT&T Enterprises, LLC	`3.00ms` from Los Angeles, US
88.55.54.165	AS3269 Telecom Italia S.p.A.	`6.81ms` from Milan, IT
70.90.156.181	AS7922 Comcast Cable Communications, LLC	`3.84ms` from Murfreesboro, US
84.54.32.197	AS210030 Marc MOREAU	`0.17ms` from Paris, FR
60.215.196.101	AS4837 CHINA UNICOM China169 Backbone	`8.49ms` from Qingdao, CN
66.50.79.197	AS10396 DATACOM CARIBE, INC.	`0.86ms` from San Juan, PR
201.215.245.101	AS22047 VTR BANDA ANCHA S.A.	`1.62ms` from Santiago, CL
52.65.150.5	AS16509 Amazon.com, Inc.	`0.11ms` from Sydney, AU
195.128.30.69	AS31604 Intertele S.A.	`5.94ms` from Warsaw, PL
54.186.133.69	AS16509 Amazon.com, Inc.	`0.13ms` from Boardman, US
73.159.103.117	AS7922 Comcast Cable Communications, LLC	`12.77ms` from Boston, US
104.186.169.53	AS7018 AT&T Enterprises, LLC	`10.75ms` from Chicago, US
96.72.242.197	AS7922 Comcast Cable Communications, LLC	`12.55ms` from Chicago, US
73.74.66.149	AS7922 Comcast Cable Communications, LLC	`6.15ms` from Chicago, US
69.76.97.5	AS7843 Charter Communications Inc	`13.78ms` from Dallas, US
87.168.61.21	AS3320 Deutsche Telekom AG	`6.63ms` from Frankfurt am Main, DE

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

traceroute -a -n -q1 -m5 155.206.9.6

traceroute to 155.206.9.6 (155.206.9.6): 5 hops max, 52 byte packets

1 [AS263812] 38.165.233.1 0.241 ms

2 [AS52468] 181.78.95.209 1.663 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Asuncion, PY

On April 13th 2026

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What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS3477 at robtex.

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