Country stats for last year of data For these country-level stats, the most recent test from each client address is examined within aggregated IP blocks (/24 for IPv4 and /40 for IPv6). If the most recent test in an IP block shows spoofing, the IP block is considered to allow spoofing. If ALL clients indicate blocking, the IP block is considered to block spoofing. (It is considered NAT blocking if there are no non-NAT tests found.) If some clients showed spoofing but the most recent tests show blocking (and there's no evidence of a change in blocking policy), then the IP block is considered "inconsistent". On the map, inconsistent results are counted as spoofing for simplicity.

Country	Client IP blocks	Spoofing IP blocks	Blocking IP blocks		Inconsistent IP blocks	Client ASNs	Spoofing ASNs
			Non-NAT	NAT
bra (Brazil)	2126	406 (19.1%)	220 (10.3%)	1490 (70.1%)	10 (0.5%)	363	163 (44.9%)
ind (India)	1647	284 (17.2%)	151 (9.2%)	1209 (73.4%)	3 (0.2%)	52	15 (28.8%)
usa (United States)	5225	239 (4.6%)	1103 (21.1%)	3880 (74.3%)	3 (0.1%)	540	121 (22.4%)
arg (Argentina)	199	50 (25.1%)	15 (7.5%)	134 (67.3%)	0 (0.0%)	22	10 (45.5%)
ita (Italy)	318	40 (12.6%)	24 (7.5%)	253 (79.6%)	1 (0.3%)	41	12 (29.3%)
kor (South Korea)	820	37 (4.5%)	499 (60.9%)	284 (34.6%)	0 (0.0%)	38	8 (21.1%)
can (Canada)	714	35 (4.9%)	90 (12.6%)	589 (82.5%)	0 (0.0%)	78	19 (24.4%)
mys (Malaysia)	258	35 (13.6%)	24 (9.3%)	199 (77.1%)	0 (0.0%)	12	3 (25.0%)
tha (Thailand)	469	35 (7.5%)	17 (3.6%)	417 (88.9%)	0 (0.0%)	18	4 (22.2%)
gbr (United Kingdom)	1152	33 (2.9%)	137 (11.9%)	981 (85.2%)	1 (0.1%)	101	23 (22.8%)
chl (Chile)	150	29 (19.3%)	9 (6.0%)	112 (74.7%)	0 (0.0%)	27	11 (40.7%)
bol (Bolivia)	113	25 (22.1%)	7 (6.2%)	80 (70.8%)	1 (0.9%)	5	1 (20.0%)
jpn (Japan)	371	23 (6.2%)	44 (11.9%)	302 (81.4%)	2 (0.5%)	52	14 (26.9%)
nld (Netherlands)	586	23 (3.9%)	117 (20.0%)	446 (76.1%)	0 (0.0%)	101	14 (13.9%)
deu (Germany)	1740	21 (1.2%)	379 (21.8%)	1340 (77.0%)	0 (0.0%)	79	15 (19.0%)
egy (Egypt)	117	21 (17.9%)	2 (1.7%)	94 (80.3%)	0 (0.0%)	4	2 (50.0%)
aus (Australia)	752	17 (2.3%)	53 (7.0%)	682 (90.7%)	0 (0.0%)	57	14 (24.6%)
are (United Arab Emirates)	49	16 (32.7%)	2 (4.1%)	31 (63.3%)	0 (0.0%)	6	2 (33.3%)
rus (Russian Federation)	178	16 (9.0%)	35 (19.7%)	127 (71.3%)	0 (0.0%)	72	8 (11.1%)
pol (Poland)	151	14 (9.3%)	9 (6.0%)	128 (84.8%)	0 (0.0%)	39	9 (23.1%)
tur (Turkey)	230	14 (6.1%)	8 (3.5%)	208 (90.4%)	0 (0.0%)	26	7 (26.9%)
zaf (South Africa)	337	14 (4.2%)	30 (8.9%)	293 (86.9%)	0 (0.0%)	43	13 (30.2%)
fra (France)	434	13 (3.0%)	63 (14.5%)	358 (82.5%)	0 (0.0%)	54	9 (16.7%)
isr (Israel)	154	13 (8.4%)	7 (4.5%)	134 (87.0%)	0 (0.0%)	16	4 (25.0%)
rou (Romania)	74	13 (17.6%)	7 (9.5%)	54 (73.0%)	0 (0.0%)	17	5 (29.4%)
swe (Sweden)	317	13 (4.1%)	33 (10.4%)	270 (85.2%)	1 (0.3%)	50	10 (20.0%)
irn (Iran)	86	12 (14.0%)	12 (14.0%)	61 (70.9%)	1 (1.2%)	25	8 (32.0%)
vnm (Vietnam)	91	12 (13.2%)	8 (8.8%)	71 (78.0%)	0 (0.0%)	10	5 (50.0%)
ken (Kenya)	61	10 (16.4%)	2 (3.3%)	49 (80.3%)	0 (0.0%)	9	4 (44.4%)
ury (Uruguay)	251	10 (4.0%)	9 (3.6%)	229 (91.2%)	3 (1.2%)	12	6 (50.0%)
bgd (Bangladesh)	41	8 (19.5%)	2 (4.9%)	30 (73.2%)	1 (2.4%)	20	6 (30.0%)
esp (Spain)	256	8 (3.1%)	4 (1.6%)	243 (94.9%)	1 (0.4%)	30	6 (20.0%)
idn (Indonesia)	48	8 (16.7%)	0 (0.0%)	40 (83.3%)	0 (0.0%)	20	7 (35.0%)
tza (Tanzania)	30	8 (26.7%)	3 (10.0%)	19 (63.3%)	0 (0.0%)	12	8 (66.7%)
zmb (Zambia)	18	8 (44.4%)	1 (5.6%)	9 (50.0%)	0 (0.0%)	4	2 (50.0%)
grd (Grenada)	14	6 (42.9%)	2 (14.3%)	6 (42.9%)	0 (0.0%)	3	2 (66.7%)
mmr (Myanmar)	45	6 (13.3%)	2 (4.4%)	37 (82.2%)	0 (0.0%)	15	6 (40.0%)
pak (Pakistan)	80	6 (7.5%)	1 (1.3%)	72 (90.0%)	1 (1.3%)	13	2 (15.4%)
sen (Senegal)	36	6 (16.7%)	0 (0.0%)	30 (83.3%)	0 (0.0%)	1	1 (100.0%)
sgp (Singapore)	44	6 (13.6%)	7 (15.9%)	31 (70.5%)	0 (0.0%)	17	2 (11.8%)
col (Colombia)	31	5 (16.1%)	1 (3.2%)	25 (80.6%)	0 (0.0%)	8	2 (25.0%)
cri (Costa Rica)	33	5 (15.2%)	0 (0.0%)	28 (84.8%)	0 (0.0%)	10	3 (30.0%)
nzl (New Zealand)	187	5 (2.7%)	27 (14.4%)	155 (82.9%)	0 (0.0%)	30	3 (10.0%)
phl (Philippines)	41	5 (12.2%)	1 (2.4%)	35 (85.4%)	0 (0.0%)	9	3 (33.3%)
che (Switzerland)	142	4 (2.8%)	51 (35.9%)	87 (61.3%)	0 (0.0%)	30	3 (10.0%)
hrv (Croatia)	48	4 (8.3%)	0 (0.0%)	44 (91.7%)	0 (0.0%)	7	3 (42.9%)
ltu (Lithuania)	29	4 (13.8%)	12 (41.4%)	13 (44.8%)	0 (0.0%)	8	2 (25.0%)
mar (Morocco)	139	4 (2.9%)	0 (0.0%)	135 (97.1%)	0 (0.0%)	4	2 (50.0%)
mex (Mexico)	101	4 (4.0%)	6 (5.9%)	91 (90.1%)	0 (0.0%)	15	3 (20.0%)
nga (Nigeria)	20	4 (20.0%)	0 (0.0%)	16 (80.0%)	0 (0.0%)	14	4 (28.6%)
ukr (Ukraine)	24	4 (16.7%)	9 (37.5%)	11 (45.8%)	0 (0.0%)	20	4 (20.0%)
ago (Angola)	12	3 (25.0%)	0 (0.0%)	9 (75.0%)	0 (0.0%)	3	1 (33.3%)
bgr (Bulgaria)	54	3 (5.6%)	8 (14.8%)	43 (79.6%)	0 (0.0%)	26	3 (11.5%)
btn (Bhutan)	9	3 (33.3%)	3 (33.3%)	3 (33.3%)	0 (0.0%)	3	1 (33.3%)
chn (China)	297	3 (1.0%)	20 (6.7%)	274 (92.3%)	0 (0.0%)	28	3 (10.7%)
cze (Czech Republic)	60	3 (5.0%)	9 (15.0%)	48 (80.0%)	0 (0.0%)	24	3 (12.5%)
dom (Dominican Republic)	24	3 (12.5%)	3 (12.5%)	18 (75.0%)	0 (0.0%)	3	1 (33.3%)
grc (Greece)	149	3 (2.0%)	30 (20.1%)	116 (77.9%)	0 (0.0%)	14	3 (21.4%)
hkg (Hong Kong)	35	3 (8.6%)	5 (14.3%)	27 (77.1%)	0 (0.0%)	20	3 (15.0%)
hun (Hungary)	74	3 (4.1%)	6 (8.1%)	65 (87.8%)	0 (0.0%)	11	3 (27.3%)
isl (Iceland)	34	3 (8.8%)	9 (26.5%)	22 (64.7%)	0 (0.0%)	11	2 (18.2%)
lka (Sri Lanka)	99	3 (3.0%)	8 (8.1%)	88 (88.9%)	0 (0.0%)	5	1 (20.0%)
sau (Saudi Arabia)	24	3 (12.5%)	1 (4.2%)	20 (83.3%)	0 (0.0%)	3	1 (33.3%)
tun (Tunisia)	50	3 (6.0%)	1 (2.0%)	46 (92.0%)	0 (0.0%)	5	3 (60.0%)
uga (Uganda)	7	3 (42.9%)	0 (0.0%)	4 (57.1%)	0 (0.0%)	6	3 (50.0%)
alb (Albania)	4	2 (50.0%)	0 (0.0%)	2 (50.0%)	0 (0.0%)	3	2 (66.7%)
fin (Finland)	67	2 (3.0%)	2 (3.0%)	63 (94.0%)	0 (0.0%)	15	2 (13.3%)
gnq (Equatorial Guinea)	3	2 (66.7%)	0 (0.0%)	1 (33.3%)	0 (0.0%)	2	2 (100.0%)
hti (Haiti)	4	2 (50.0%)	0 (0.0%)	2 (50.0%)	0 (0.0%)	2	2 (100.0%)
jor (Jordan)	22	2 (9.1%)	0 (0.0%)	20 (90.9%)	0 (0.0%)	5	2 (40.0%)
lbn (Lebanon)	8	2 (25.0%)	0 (0.0%)	6 (75.0%)	0 (0.0%)	5	2 (40.0%)
mkd (Macedonia)	21	2 (9.5%)	0 (0.0%)	19 (90.5%)	0 (0.0%)	3	1 (33.3%)
nor (Norway)	72	2 (2.8%)	6 (8.3%)	64 (88.9%)	0 (0.0%)	13	2 (15.4%)
prt (Portugal)	150	2 (1.3%)	6 (4.0%)	142 (94.7%)	0 (0.0%)	12	2 (16.7%)
srb (Serbia)	50	2 (4.0%)	1 (2.0%)	47 (94.0%)	0 (0.0%)	12	2 (16.7%)
aut (Austria)	183	1 (0.5%)	17 (9.3%)	165 (90.2%)	0 (0.0%)	19	1 (5.3%)
aze (Azerbaijan)	7	1 (14.3%)	0 (0.0%)	6 (85.7%)	0 (0.0%)	4	1 (25.0%)
bel (Belgium)	66	1 (1.5%)	15 (22.7%)	50 (75.8%)	0 (0.0%)	11	1 (9.1%)
civ (Ivory Coast (Cote D'Ivoire))	15	1 (6.7%)	0 (0.0%)	14 (93.3%)	0 (0.0%)	3	1 (33.3%)
cym (Cayman Islands)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
dnk (Denmark)	84	1 (1.2%)	7 (8.3%)	76 (90.5%)	0 (0.0%)	17	1 (5.9%)
ecu (Ecuador)	2	1 (50.0%)	1 (50.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
fji (Fiji)	14	1 (7.1%)	0 (0.0%)	13 (92.9%)	0 (0.0%)	3	1 (33.3%)
gha (Ghana)	25	1 (4.0%)	0 (0.0%)	24 (96.0%)	0 (0.0%)	7	1 (14.3%)
gtm (Guatemala)	5	1 (20.0%)	0 (0.0%)	4 (80.0%)	0 (0.0%)	5	1 (20.0%)
irq (Iraq)	9	1 (11.1%)	0 (0.0%)	8 (88.9%)	0 (0.0%)	4	1 (25.0%)
jam (Jamaica)	6	1 (16.7%)	0 (0.0%)	5 (83.3%)	0 (0.0%)	3	1 (33.3%)
lux (Luxembourg)	36	1 (2.8%)	3 (8.3%)	32 (88.9%)	0 (0.0%)	6	1 (16.7%)
lva (Latvia)	15	1 (6.7%)	1 (6.7%)	13 (86.7%)	0 (0.0%)	7	1 (14.3%)
mli (Mali)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	2	1 (50.0%)
moz (Mozambique)	7	1 (14.3%)	4 (57.1%)	2 (28.6%)	0 (0.0%)	4	1 (25.0%)
mus (Mauritius)	37	1 (2.7%)	10 (27.0%)	26 (70.3%)	0 (0.0%)	7	1 (14.3%)
ncl (New Caledonia [French])	4	1 (25.0%)	1 (25.0%)	2 (50.0%)	0 (0.0%)	3	1 (33.3%)
npl (Nepal)	9	1 (11.1%)	0 (0.0%)	8 (88.9%)	0 (0.0%)	3	1 (33.3%)
per (Peru)	25	1 (4.0%)	1 (4.0%)	23 (92.0%)	0 (0.0%)	6	1 (16.7%)
som (Somalia)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	2	1 (50.0%)
syr (Syria)	75	1 (1.3%)	0 (0.0%)	74 (98.7%)	0 (0.0%)	1	1 (100.0%)
tgo (Togo)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
twn (Taiwan)	133	1 (0.8%)	5 (3.8%)	127 (95.5%)	0 (0.0%)	4	1 (25.0%)
vir (Virgin Islands [US])	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	1	1 (100.0%)
zwe (Zimbabwe)	11	1 (9.1%)	0 (0.0%)	10 (90.9%)	0 (0.0%)	3	1 (33.3%)
and (Andorra, Principality of)	7	0 (0.0%)	4 (57.1%)	3 (42.9%)	0 (0.0%)	1	0 (0.0%)
atg (Antigua and Barbuda)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
bhr (Bahrain)	22	0 (0.0%)	0 (0.0%)	22 (100.0%)	0 (0.0%)	2	0 (0.0%)
bih (Bosnia and Herzegovina)	6	0 (0.0%)	0 (0.0%)	6 (100.0%)	0 (0.0%)	5	0 (0.0%)
blr (Belarus)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
blz (Belize)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
bmu (Bermuda)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
brb (Barbados)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
bwa (Botswana)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
cyp (Cyprus)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
dza (Algeria)	18	0 (0.0%)	0 (0.0%)	18 (100.0%)	0 (0.0%)	2	0 (0.0%)
est (Estonia)	7	0 (0.0%)	3 (42.9%)	4 (57.1%)	0 (0.0%)	3	0 (0.0%)
eth (Ethiopia)	10	0 (0.0%)	0 (0.0%)	10 (100.0%)	0 (0.0%)	1	0 (0.0%)
fro (Faroe Islands)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
geo (Georgia)	14	0 (0.0%)	8 (57.1%)	6 (42.9%)	0 (0.0%)	3	0 (0.0%)
glp (Guadeloupe [French])	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
gum (Guam [US])	5	0 (0.0%)	0 (0.0%)	5 (100.0%)	0 (0.0%)	2	0 (0.0%)
hnd (Honduras)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
irl (Ireland)	128	0 (0.0%)	24 (18.8%)	104 (81.3%)	0 (0.0%)	13	0 (0.0%)
khm (Cambodia, Kingdom of)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
kwt (Kuwait)	11	0 (0.0%)	0 (0.0%)	11 (100.0%)	0 (0.0%)	1	0 (0.0%)
lbr (Liberia)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
lby (Libya)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
mac (Macau)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
maf (Saint Martin)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
mco (Monaco)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
mda (Moldova, Republic of)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
mdv (Maldives)	45	0 (0.0%)	0 (0.0%)	45 (100.0%)	0 (0.0%)	1	0 (0.0%)
mrt (Mauritania)	6	0 (0.0%)	0 (0.0%)	6 (100.0%)	0 (0.0%)	1	0 (0.0%)
mtq (Martinique [French])	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
omn (Oman)	5	0 (0.0%)	0 (0.0%)	5 (100.0%)	0 (0.0%)	2	0 (0.0%)
pan (Panama)	38	0 (0.0%)	3 (7.9%)	35 (92.1%)	0 (0.0%)	10	0 (0.0%)
png (Papua New Guinea)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
pri (Puerto Rico)	3	0 (0.0%)	1 (33.3%)	2 (66.7%)	0 (0.0%)	2	0 (0.0%)
pse (Palestinian Territory, Occupied)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
qat (Qatar)	21	0 (0.0%)	0 (0.0%)	21 (100.0%)	0 (0.0%)	3	0 (0.0%)
reu (Reunion [French])	27	0 (0.0%)	0 (0.0%)	27 (100.0%)	0 (0.0%)	2	0 (0.0%)
rwa (Rwanda)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
slb (Solomon Islands)	6	0 (0.0%)	0 (0.0%)	6 (100.0%)	0 (0.0%)	3	0 (0.0%)
svk (Slovak Republic)	11	0 (0.0%)	0 (0.0%)	11 (100.0%)	0 (0.0%)	8	0 (0.0%)
svn (Slovenia)	15	0 (0.0%)	4 (26.7%)	11 (73.3%)	0 (0.0%)	9	0 (0.0%)
sxm (Sint Maarten)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
syc (Seychelles)	4	0 (0.0%)	3 (75.0%)	1 (25.0%)	0 (0.0%)	3	0 (0.0%)
ton (Tonga)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
tto (Trinidad and Tobago)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
uzb (Uzbekistan)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
ven (Venezuela)	69	0 (0.0%)	0 (0.0%)	69 (100.0%)	0 (0.0%)	2	0 (0.0%)
wsm (Samoa)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)

Center for Applied Internet Data Analysis    |   Based at the University of California's San Diego Supercomputer Center

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