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)	2520	479 (19.0%)	290 (11.5%)	1738 (69.0%)	13 (0.5%)	417	213 (51.1%)
ind (India)	1598	466 (29.2%)	197 (12.3%)	934 (58.4%)	1 (0.1%)	57	17 (29.8%)
usa (United States)	4602	205 (4.5%)	1109 (24.1%)	3284 (71.4%)	4 (0.1%)	490	112 (22.9%)
egy (Egypt)	147	46 (31.3%)	4 (2.7%)	97 (66.0%)	0 (0.0%)	3	2 (66.7%)
tha (Thailand)	500	45 (9.0%)	22 (4.4%)	433 (86.6%)	0 (0.0%)	23	6 (26.1%)
ita (Italy)	303	36 (11.9%)	19 (6.3%)	248 (81.8%)	0 (0.0%)	46	16 (34.8%)
arg (Argentina)	161	33 (20.5%)	16 (9.9%)	112 (69.6%)	0 (0.0%)	30	6 (20.0%)
chl (Chile)	153	33 (21.6%)	9 (5.9%)	111 (72.5%)	0 (0.0%)	25	12 (48.0%)
kor (South Korea)	773	32 (4.1%)	460 (59.5%)	281 (36.4%)	0 (0.0%)	36	5 (13.9%)
gbr (United Kingdom)	971	30 (3.1%)	131 (13.5%)	809 (83.3%)	1 (0.1%)	103	23 (22.3%)
irn (Iran)	139	29 (20.9%)	9 (6.5%)	100 (71.9%)	1 (0.7%)	23	7 (30.4%)
nld (Netherlands)	508	29 (5.7%)	144 (28.3%)	335 (65.9%)	0 (0.0%)	96	17 (17.7%)
deu (Germany)	1189	24 (2.0%)	323 (27.2%)	841 (70.7%)	1 (0.1%)	83	16 (19.3%)
are (United Arab Emirates)	72	23 (31.9%)	19 (26.4%)	30 (41.7%)	0 (0.0%)	7	3 (42.9%)
zaf (South Africa)	275	23 (8.4%)	30 (10.9%)	221 (80.4%)	1 (0.4%)	49	16 (32.7%)
mys (Malaysia)	160	22 (13.8%)	12 (7.5%)	126 (78.8%)	0 (0.0%)	11	3 (27.3%)
isr (Israel)	213	21 (9.9%)	8 (3.8%)	184 (86.4%)	0 (0.0%)	19	4 (21.1%)
can (Canada)	534	20 (3.7%)	91 (17.0%)	422 (79.0%)	1 (0.2%)	67	16 (23.9%)
fra (France)	390	18 (4.6%)	63 (16.2%)	308 (79.0%)	1 (0.3%)	51	12 (23.5%)
rus (Russian Federation)	211	18 (8.5%)	41 (19.4%)	152 (72.0%)	0 (0.0%)	72	13 (18.1%)
jpn (Japan)	360	15 (4.2%)	57 (15.8%)	288 (80.0%)	0 (0.0%)	53	10 (18.9%)
rou (Romania)	79	15 (19.0%)	9 (11.4%)	55 (69.6%)	0 (0.0%)	16	6 (37.5%)
aus (Australia)	618	14 (2.3%)	52 (8.4%)	551 (89.2%)	1 (0.2%)	52	12 (23.1%)
pol (Poland)	160	14 (8.8%)	12 (7.5%)	134 (83.8%)	0 (0.0%)	44	12 (27.3%)
vnm (Vietnam)	91	14 (15.4%)	7 (7.7%)	69 (75.8%)	1 (1.1%)	10	5 (50.0%)
ago (Angola)	20	13 (65.0%)	0 (0.0%)	7 (35.0%)	0 (0.0%)	3	1 (33.3%)
swe (Sweden)	334	13 (3.9%)	32 (9.6%)	287 (85.9%)	2 (0.6%)	46	10 (21.7%)
tur (Turkey)	235	13 (5.5%)	17 (7.2%)	205 (87.2%)	0 (0.0%)	29	8 (27.6%)
bgd (Bangladesh)	37	12 (32.4%)	1 (2.7%)	24 (64.9%)	0 (0.0%)	20	6 (30.0%)
sau (Saudi Arabia)	93	11 (11.8%)	0 (0.0%)	82 (88.2%)	0 (0.0%)	4	1 (25.0%)
bol (Bolivia)	118	10 (8.5%)	10 (8.5%)	97 (82.2%)	1 (0.8%)	5	2 (40.0%)
chn (China)	455	10 (2.2%)	84 (18.5%)	361 (79.3%)	0 (0.0%)	34	5 (14.7%)
mmr (Myanmar)	57	10 (17.5%)	2 (3.5%)	45 (78.9%)	0 (0.0%)	18	7 (38.9%)
bgr (Bulgaria)	46	9 (19.6%)	9 (19.6%)	28 (60.9%)	0 (0.0%)	25	6 (24.0%)
ken (Kenya)	78	9 (11.5%)	4 (5.1%)	65 (83.3%)	0 (0.0%)	13	4 (30.8%)
tza (Tanzania)	47	9 (19.1%)	3 (6.4%)	35 (74.5%)	0 (0.0%)	14	8 (57.1%)
ury (Uruguay)	56	9 (16.1%)	9 (16.1%)	37 (66.1%)	1 (1.8%)	10	5 (50.0%)
aut (Austria)	174	8 (4.6%)	16 (9.2%)	150 (86.2%)	0 (0.0%)	24	4 (16.7%)
idn (Indonesia)	45	8 (17.8%)	0 (0.0%)	37 (82.2%)	0 (0.0%)	21	8 (38.1%)
pak (Pakistan)	76	8 (10.5%)	3 (3.9%)	64 (84.2%)	1 (1.3%)	10	1 (10.0%)
phl (Philippines)	35	8 (22.9%)	0 (0.0%)	27 (77.1%)	0 (0.0%)	9	5 (55.6%)
sgp (Singapore)	57	6 (10.5%)	10 (17.5%)	40 (70.2%)	1 (1.8%)	24	3 (12.5%)
uga (Uganda)	11	6 (54.5%)	0 (0.0%)	5 (45.5%)	0 (0.0%)	8	4 (50.0%)
lka (Sri Lanka)	126	5 (4.0%)	7 (5.6%)	114 (90.5%)	0 (0.0%)	5	2 (40.0%)
che (Switzerland)	137	4 (2.9%)	47 (34.3%)	86 (62.8%)	0 (0.0%)	30	3 (10.0%)
cri (Costa Rica)	16	4 (25.0%)	0 (0.0%)	12 (75.0%)	0 (0.0%)	6	2 (33.3%)
cze (Czech Republic)	71	4 (5.6%)	9 (12.7%)	58 (81.7%)	0 (0.0%)	24	3 (12.5%)
gnq (Equatorial Guinea)	5	4 (80.0%)	0 (0.0%)	1 (20.0%)	0 (0.0%)	2	2 (100.0%)
hkg (Hong Kong)	29	4 (13.8%)	3 (10.3%)	21 (72.4%)	1 (3.4%)	19	4 (21.1%)
hrv (Croatia)	25	4 (16.0%)	0 (0.0%)	21 (84.0%)	0 (0.0%)	7	3 (42.9%)
ltu (Lithuania)	22	4 (18.2%)	11 (50.0%)	7 (31.8%)	0 (0.0%)	6	2 (33.3%)
mex (Mexico)	129	4 (3.1%)	16 (12.4%)	109 (84.5%)	0 (0.0%)	19	2 (10.5%)
mus (Mauritius)	55	4 (7.3%)	12 (21.8%)	39 (70.9%)	0 (0.0%)	9	3 (33.3%)
pry (Paraguay)	22	4 (18.2%)	8 (36.4%)	10 (45.5%)	0 (0.0%)	8	2 (25.0%)
alb (Albania)	5	3 (60.0%)	0 (0.0%)	2 (40.0%)	0 (0.0%)	4	2 (50.0%)
dom (Dominican Republic)	33	3 (9.1%)	3 (9.1%)	27 (81.8%)	0 (0.0%)	2	1 (50.0%)
fin (Finland)	55	3 (5.5%)	4 (7.3%)	48 (87.3%)	0 (0.0%)	14	3 (21.4%)
khm (Cambodia, Kingdom of)	14	3 (21.4%)	0 (0.0%)	11 (78.6%)	0 (0.0%)	8	3 (37.5%)
mar (Morocco)	98	3 (3.1%)	0 (0.0%)	95 (96.9%)	0 (0.0%)	4	2 (50.0%)
nga (Nigeria)	24	3 (12.5%)	1 (4.2%)	20 (83.3%)	0 (0.0%)	13	3 (23.1%)
nzl (New Zealand)	159	3 (1.9%)	41 (25.8%)	115 (72.3%)	0 (0.0%)	24	2 (8.3%)
tun (Tunisia)	25	3 (12.0%)	0 (0.0%)	22 (88.0%)	0 (0.0%)	4	3 (75.0%)
ukr (Ukraine)	40	3 (7.5%)	9 (22.5%)	28 (70.0%)	0 (0.0%)	23	3 (13.0%)
bel (Belgium)	32	2 (6.3%)	9 (28.1%)	21 (65.6%)	0 (0.0%)	8	2 (25.0%)
btn (Bhutan)	10	2 (20.0%)	5 (50.0%)	3 (30.0%)	0 (0.0%)	3	1 (33.3%)
esp (Spain)	178	2 (1.1%)	5 (2.8%)	171 (96.1%)	0 (0.0%)	23	2 (8.7%)
grd (Grenada)	5	2 (40.0%)	2 (40.0%)	1 (20.0%)	0 (0.0%)	2	1 (50.0%)
hti (Haiti)	9	2 (22.2%)	1 (11.1%)	6 (66.7%)	0 (0.0%)	3	2 (66.7%)
hun (Hungary)	49	2 (4.1%)	3 (6.1%)	44 (89.8%)	0 (0.0%)	9	2 (22.2%)
irq (Iraq)	11	2 (18.2%)	0 (0.0%)	9 (81.8%)	0 (0.0%)	7	2 (28.6%)
isl (Iceland)	23	2 (8.7%)	8 (34.8%)	13 (56.5%)	0 (0.0%)	12	2 (16.7%)
jor (Jordan)	15	2 (13.3%)	0 (0.0%)	13 (86.7%)	0 (0.0%)	3	2 (66.7%)
lbn (Lebanon)	5	2 (40.0%)	0 (0.0%)	3 (60.0%)	0 (0.0%)	4	2 (50.0%)
mkd (Macedonia)	6	2 (33.3%)	0 (0.0%)	4 (66.7%)	0 (0.0%)	3	1 (33.3%)
mwi (Malawi)	9	2 (22.2%)	0 (0.0%)	7 (77.8%)	0 (0.0%)	5	2 (40.0%)
nor (Norway)	64	2 (3.1%)	7 (10.9%)	55 (85.9%)	0 (0.0%)	14	2 (14.3%)
srb (Serbia)	31	2 (6.5%)	0 (0.0%)	29 (93.5%)	0 (0.0%)	11	2 (18.2%)
twn (Taiwan)	113	2 (1.8%)	10 (8.8%)	101 (89.4%)	0 (0.0%)	8	2 (25.0%)
zwe (Zimbabwe)	8	2 (25.0%)	0 (0.0%)	6 (75.0%)	0 (0.0%)	3	2 (66.7%)
aze (Azerbaijan)	19	1 (5.3%)	0 (0.0%)	18 (94.7%)	0 (0.0%)	4	1 (25.0%)
brb (Barbados)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	2	1 (50.0%)
dnk (Denmark)	68	1 (1.5%)	5 (7.4%)	62 (91.2%)	0 (0.0%)	19	1 (5.3%)
ecu (Ecuador)	2	1 (50.0%)	1 (50.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
gha (Ghana)	10	1 (10.0%)	0 (0.0%)	9 (90.0%)	0 (0.0%)	6	1 (16.7%)
grc (Greece)	152	1 (0.7%)	28 (18.4%)	123 (80.9%)	0 (0.0%)	9	1 (11.1%)
gtm (Guatemala)	5	1 (20.0%)	0 (0.0%)	4 (80.0%)	0 (0.0%)	5	1 (20.0%)
irl (Ireland)	94	1 (1.1%)	24 (25.5%)	69 (73.4%)	0 (0.0%)	18	1 (5.6%)
lby (Libya)	3	1 (33.3%)	1 (33.3%)	1 (33.3%)	0 (0.0%)	2	1 (50.0%)
lie (Liechtenstein)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	1	1 (100.0%)
lux (Luxembourg)	29	1 (3.4%)	3 (10.3%)	25 (86.2%)	0 (0.0%)	9	1 (11.1%)
lva (Latvia)	17	1 (5.9%)	1 (5.9%)	15 (88.2%)	0 (0.0%)	7	1 (14.3%)
per (Peru)	26	1 (3.8%)	1 (3.8%)	24 (92.3%)	0 (0.0%)	5	1 (20.0%)
slv (El Salvador)	4	1 (25.0%)	0 (0.0%)	3 (75.0%)	0 (0.0%)	3	1 (33.3%)
som (Somalia)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	1	1 (100.0%)
tgo (Togo)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	1	1 (100.0%)
ven (Venezuela)	72	1 (1.4%)	1 (1.4%)	70 (97.2%)	0 (0.0%)	3	1 (33.3%)
zmb (Zambia)	20	1 (5.0%)	1 (5.0%)	18 (90.0%)	0 (0.0%)	3	1 (33.3%)
ala (Åland Islands)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
and (Andorra, Principality of)	7	0 (0.0%)	4 (57.1%)	3 (42.9%)	0 (0.0%)	1	0 (0.0%)
arm (Armenia)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	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%)
bdi (Burundi)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
ben (Benin)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	3	0 (0.0%)
bhr (Bahrain)	37	0 (0.0%)	0 (0.0%)	37 (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%)	4	0 (0.0%)
blr (Belarus)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
blz (Belize)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
bmu (Bermuda)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
bwa (Botswana)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
civ (Ivory Coast (Cote D'Ivoire))	8	0 (0.0%)	0 (0.0%)	8 (100.0%)	0 (0.0%)	2	0 (0.0%)
col (Colombia)	17	0 (0.0%)	1 (5.9%)	16 (94.1%)	0 (0.0%)	8	0 (0.0%)
cyp (Cyprus)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
dza (Algeria)	8	0 (0.0%)	0 (0.0%)	8 (100.0%)	0 (0.0%)	2	0 (0.0%)
est (Estonia)	6	0 (0.0%)	2 (33.3%)	4 (66.7%)	0 (0.0%)	5	0 (0.0%)
eth (Ethiopia)	9	0 (0.0%)	0 (0.0%)	9 (100.0%)	0 (0.0%)	1	0 (0.0%)
fji (Fiji)	12	0 (0.0%)	0 (0.0%)	12 (100.0%)	0 (0.0%)	3	0 (0.0%)
geo (Georgia)	4	0 (0.0%)	2 (50.0%)	2 (50.0%)	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%)
jam (Jamaica)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	1	0 (0.0%)
kwt (Kuwait)	9	0 (0.0%)	0 (0.0%)	9 (100.0%)	0 (0.0%)	1	0 (0.0%)
lbr (Liberia)	3	0 (0.0%)	0 (0.0%)	3 (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%)
mco (Monaco)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
mda (Moldova, Republic of)	12	0 (0.0%)	6 (50.0%)	6 (50.0%)	0 (0.0%)	4	0 (0.0%)
mdv (Maldives)	31	0 (0.0%)	0 (0.0%)	31 (100.0%)	0 (0.0%)	1	0 (0.0%)
mlt (Malta)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
mrt (Mauritania)	3	0 (0.0%)	0 (0.0%)	3 (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%)
ncl (New Caledonia [French])	8	0 (0.0%)	1 (12.5%)	6 (75.0%)	1 (12.5%)	2	1 (50.0%)
npl (Nepal)	10	0 (0.0%)	0 (0.0%)	10 (100.0%)	0 (0.0%)	2	0 (0.0%)
omn (Oman)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
pan (Panama)	53	0 (0.0%)	4 (7.5%)	49 (92.5%)	0 (0.0%)	14	0 (0.0%)
png (Papua New Guinea)	6	0 (0.0%)	0 (0.0%)	6 (100.0%)	0 (0.0%)	3	0 (0.0%)
pri (Puerto Rico)	5	0 (0.0%)	1 (20.0%)	4 (80.0%)	0 (0.0%)	5	0 (0.0%)
prt (Portugal)	103	0 (0.0%)	10 (9.7%)	93 (90.3%)	0 (0.0%)	9	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)	8	0 (0.0%)	0 (0.0%)	8 (100.0%)	0 (0.0%)	3	0 (0.0%)
reu (Reunion [French])	10	0 (0.0%)	0 (0.0%)	10 (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%)
sen (Senegal)	20	0 (0.0%)	0 (0.0%)	20 (100.0%)	0 (0.0%)	1	0 (0.0%)
slb (Solomon Islands)	5	0 (0.0%)	0 (0.0%)	5 (100.0%)	0 (0.0%)	3	0 (0.0%)
svk (Slovak Republic)	16	0 (0.0%)	0 (0.0%)	16 (100.0%)	0 (0.0%)	9	0 (0.0%)
svn (Slovenia)	6	0 (0.0%)	2 (33.3%)	4 (66.7%)	0 (0.0%)	5	0 (0.0%)
syc (Seychelles)	3	0 (0.0%)	3 (100.0%)	0 (0.0%)	0 (0.0%)	2	0 (0.0%)
syr (Syria)	65	0 (0.0%)	0 (0.0%)	65 (100.0%)	0 (0.0%)	1	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%)	1	0 (0.0%)
wsm (Samoa)	1	0 (0.0%)	0 (0.0%)	1 (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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