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)	2560	414 (16.2%)	548 (21.4%)	1562 (61.0%)	36 (1.4%)	566	245 (43.3%)
ind (India)	575	257 (44.7%)	67 (11.7%)	248 (43.1%)	3 (0.5%)	46	17 (37.0%)
usa (United States)	1943	164 (8.4%)	560 (28.8%)	1217 (62.6%)	2 (0.1%)	335	70 (20.9%)
chl (Chile)	321	61 (19.0%)	13 (4.0%)	247 (76.9%)	0 (0.0%)	25	7 (28.0%)
egy (Egypt)	169	56 (33.1%)	0 (0.0%)	113 (66.9%)	0 (0.0%)	6	3 (50.0%)
zaf (South Africa)	201	34 (16.9%)	11 (5.5%)	155 (77.1%)	1 (0.5%)	44	19 (43.2%)
grc (Greece)	115	30 (26.1%)	10 (8.7%)	75 (65.2%)	0 (0.0%)	7	1 (14.3%)
ita (Italy)	306	29 (9.5%)	20 (6.5%)	256 (83.7%)	1 (0.3%)	50	13 (26.0%)
tur (Turkey)	621	27 (4.3%)	64 (10.3%)	530 (85.3%)	0 (0.0%)	82	16 (19.5%)
arg (Argentina)	133	25 (18.8%)	13 (9.8%)	94 (70.7%)	1 (0.8%)	24	6 (25.0%)
nld (Netherlands)	352	24 (6.8%)	76 (21.6%)	249 (70.7%)	3 (0.9%)	73	15 (20.5%)
gbr (United Kingdom)	347	23 (6.6%)	64 (18.4%)	260 (74.9%)	0 (0.0%)	69	15 (21.7%)
idn (Indonesia)	46	22 (47.8%)	10 (21.7%)	14 (30.4%)	0 (0.0%)	25	12 (48.0%)
col (Colombia)	88	20 (22.7%)	4 (4.5%)	64 (72.7%)	0 (0.0%)	17	8 (47.1%)
chn (China)	390	17 (4.4%)	99 (25.4%)	274 (70.3%)	0 (0.0%)	26	9 (34.6%)
pry (Paraguay)	37	17 (45.9%)	8 (21.6%)	12 (32.4%)	0 (0.0%)	14	10 (71.4%)
ukr (Ukraine)	42	17 (40.5%)	7 (16.7%)	18 (42.9%)	0 (0.0%)	24	8 (33.3%)
npl (Nepal)	52	16 (30.8%)	9 (17.3%)	27 (51.9%)	0 (0.0%)	10	5 (50.0%)
ven (Venezuela)	86	16 (18.6%)	8 (9.3%)	62 (72.1%)	0 (0.0%)	14	5 (35.7%)
rus (Russian Federation)	122	15 (12.3%)	14 (11.5%)	93 (76.2%)	0 (0.0%)	40	10 (25.0%)
tha (Thailand)	148	15 (10.1%)	6 (4.1%)	127 (85.8%)	0 (0.0%)	18	9 (50.0%)
mdv (Maldives)	19	14 (73.7%)	1 (5.3%)	4 (21.1%)	0 (0.0%)	3	2 (66.7%)
vnm (Vietnam)	98	14 (14.3%)	7 (7.1%)	77 (78.6%)	0 (0.0%)	11	6 (54.5%)
can (Canada)	176	13 (7.4%)	25 (14.2%)	138 (78.4%)	0 (0.0%)	37	6 (16.2%)
isr (Israel)	130	13 (10.0%)	18 (13.8%)	99 (76.2%)	0 (0.0%)	10	1 (10.0%)
dnk (Denmark)	24	12 (50.0%)	5 (20.8%)	7 (29.2%)	0 (0.0%)	9	3 (33.3%)
ken (Kenya)	110	12 (10.9%)	8 (7.3%)	90 (81.8%)	0 (0.0%)	19	6 (31.6%)
twn (Taiwan)	101	12 (11.9%)	2 (2.0%)	87 (86.1%)	0 (0.0%)	6	2 (33.3%)
phl (Philippines)	126	11 (8.7%)	16 (12.7%)	99 (78.6%)	0 (0.0%)	19	6 (31.6%)
rou (Romania)	96	11 (11.5%)	38 (39.6%)	47 (49.0%)	0 (0.0%)	17	2 (11.8%)
aus (Australia)	149	9 (6.0%)	29 (19.5%)	111 (74.5%)	0 (0.0%)	35	8 (22.9%)
jpn (Japan)	239	8 (3.3%)	45 (18.8%)	186 (77.8%)	0 (0.0%)	41	6 (14.6%)
tza (Tanzania)	25	8 (32.0%)	1 (4.0%)	16 (64.0%)	0 (0.0%)	13	7 (53.8%)
hkg (Hong Kong)	28	7 (25.0%)	9 (32.1%)	12 (42.9%)	0 (0.0%)	17	7 (41.2%)
mex (Mexico)	231	6 (2.6%)	21 (9.1%)	204 (88.3%)	0 (0.0%)	22	5 (22.7%)
pan (Panama)	62	6 (9.7%)	2 (3.2%)	54 (87.1%)	0 (0.0%)	6	4 (66.7%)
bgd (Bangladesh)	19	5 (26.3%)	0 (0.0%)	14 (73.7%)	0 (0.0%)	10	4 (40.0%)
ecu (Ecuador)	27	5 (18.5%)	2 (7.4%)	20 (74.1%)	0 (0.0%)	10	2 (20.0%)
mus (Mauritius)	15	5 (33.3%)	0 (0.0%)	10 (66.7%)	0 (0.0%)	12	4 (33.3%)
tun (Tunisia)	5	5 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
ury (Uruguay)	144	5 (3.5%)	10 (6.9%)	129 (89.6%)	0 (0.0%)	6	2 (33.3%)
btn (Bhutan)	8	4 (50.0%)	1 (12.5%)	3 (37.5%)	0 (0.0%)	1	1 (100.0%)
deu (Germany)	492	4 (0.8%)	88 (17.9%)	400 (81.3%)	0 (0.0%)	72	4 (5.6%)
dza (Algeria)	11	4 (36.4%)	0 (0.0%)	7 (63.6%)	0 (0.0%)	2	1 (50.0%)
fra (France)	172	4 (2.3%)	53 (30.8%)	115 (66.9%)	0 (0.0%)	28	3 (10.7%)
irn (Iran)	237	4 (1.7%)	8 (3.4%)	225 (94.9%)	0 (0.0%)	16	3 (18.8%)
sau (Saudi Arabia)	340	4 (1.2%)	29 (8.5%)	303 (89.1%)	4 (1.2%)	9	2 (22.2%)
are (United Arab Emirates)	29	3 (10.3%)	6 (20.7%)	19 (65.5%)	1 (3.4%)	6	2 (33.3%)
bgr (Bulgaria)	39	3 (7.7%)	5 (12.8%)	31 (79.5%)	0 (0.0%)	18	2 (11.1%)
bol (Bolivia)	50	3 (6.0%)	6 (12.0%)	41 (82.0%)	0 (0.0%)	4	1 (25.0%)
esp (Spain)	113	3 (2.7%)	8 (7.1%)	102 (90.3%)	0 (0.0%)	15	2 (13.3%)
mda (Moldova, Republic of)	26	3 (11.5%)	6 (23.1%)	16 (61.5%)	1 (3.8%)	9	3 (33.3%)
pol (Poland)	183	3 (1.6%)	13 (7.1%)	167 (91.3%)	0 (0.0%)	34	2 (5.9%)
srb (Serbia)	42	3 (7.1%)	3 (7.1%)	36 (85.7%)	0 (0.0%)	10	2 (20.0%)
swe (Sweden)	64	3 (4.7%)	16 (25.0%)	45 (70.3%)	0 (0.0%)	23	3 (13.0%)
cri (Costa Rica)	15	2 (13.3%)	1 (6.7%)	12 (80.0%)	0 (0.0%)	8	2 (25.0%)
gum (Guam [US])	10	2 (20.0%)	5 (50.0%)	3 (30.0%)	0 (0.0%)	4	1 (25.0%)
sur (Suriname)	2	2 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
uga (Uganda)	8	2 (25.0%)	0 (0.0%)	6 (75.0%)	0 (0.0%)	3	2 (66.7%)
ago (Angola)	153	1 (0.7%)	3 (2.0%)	149 (97.4%)	0 (0.0%)	6	1 (16.7%)
atg (Antigua and Barbuda)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
bhr (Bahrain)	56	1 (1.8%)	4 (7.1%)	51 (91.1%)	0 (0.0%)	4	1 (25.0%)
bhs (Bahamas)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
che (Switzerland)	57	1 (1.8%)	17 (29.8%)	39 (68.4%)	0 (0.0%)	21	1 (4.8%)
cze (Czech Republic)	31	1 (3.2%)	1 (3.2%)	29 (93.5%)	0 (0.0%)	11	1 (9.1%)
dji (Djibouti)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
est (Estonia)	4	1 (25.0%)	2 (50.0%)	1 (25.0%)	0 (0.0%)	2	1 (50.0%)
eth (Ethiopia)	22	1 (4.5%)	0 (0.0%)	21 (95.5%)	0 (0.0%)	1	1 (100.0%)
gin (Guinea)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	2	1 (50.0%)
jor (Jordan)	5	1 (20.0%)	2 (40.0%)	2 (40.0%)	0 (0.0%)	3	1 (33.3%)
kna (Saint Kitts and Nevis)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
kwt (Kuwait)	3	1 (33.3%)	2 (66.7%)	0 (0.0%)	0 (0.0%)	2	1 (50.0%)
lux (Luxembourg)	8	1 (12.5%)	6 (75.0%)	1 (12.5%)	0 (0.0%)	4	1 (25.0%)
mar (Morocco)	112	1 (0.9%)	1 (0.9%)	110 (98.2%)	0 (0.0%)	6	1 (16.7%)
mkd (Macedonia)	2	1 (50.0%)	0 (0.0%)	1 (50.0%)	0 (0.0%)	2	1 (50.0%)
pak (Pakistan)	53	1 (1.9%)	3 (5.7%)	49 (92.5%)	0 (0.0%)	8	1 (12.5%)
per (Peru)	8	1 (12.5%)	1 (12.5%)	6 (75.0%)	0 (0.0%)	6	1 (16.7%)
png (Papua New Guinea)	1	1 (100.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	1	1 (100.0%)
prt (Portugal)	54	1 (1.9%)	13 (24.1%)	39 (72.2%)	1 (1.9%)	9	2 (22.2%)
rwa (Rwanda)	3	1 (33.3%)	0 (0.0%)	2 (66.7%)	0 (0.0%)	3	1 (33.3%)
alb (Albania)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
arm (Armenia)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
aut (Austria)	76	0 (0.0%)	11 (14.5%)	65 (85.5%)	0 (0.0%)	16	0 (0.0%)
aze (Azerbaijan)	12	0 (0.0%)	0 (0.0%)	12 (100.0%)	0 (0.0%)	4	0 (0.0%)
bel (Belgium)	22	0 (0.0%)	6 (27.3%)	16 (72.7%)	0 (0.0%)	6	0 (0.0%)
bih (Bosnia and Herzegovina)	4	0 (0.0%)	1 (25.0%)	3 (75.0%)	0 (0.0%)	3	0 (0.0%)
blr (Belarus)	32	0 (0.0%)	0 (0.0%)	32 (100.0%)	0 (0.0%)	4	0 (0.0%)
bmu (Bermuda)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	1	0 (0.0%)
cmr (Cameroon)	4	0 (0.0%)	0 (0.0%)	4 (100.0%)	0 (0.0%)	3	0 (0.0%)
cod (Congo, The Democratic Republic of the)	2	0 (0.0%)	1 (50.0%)	1 (50.0%)	0 (0.0%)	1	0 (0.0%)
cyp (Cyprus)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
dma (Dominica)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	1	0 (0.0%)
dom (Dominican Republic)	23	0 (0.0%)	5 (21.7%)	18 (78.3%)	0 (0.0%)	2	0 (0.0%)
fin (Finland)	13	0 (0.0%)	10 (76.9%)	3 (23.1%)	0 (0.0%)	4	0 (0.0%)
fji (Fiji)	6	0 (0.0%)	1 (16.7%)	5 (83.3%)	0 (0.0%)	2	0 (0.0%)
geo (Georgia)	6	0 (0.0%)	1 (16.7%)	5 (83.3%)	0 (0.0%)	2	0 (0.0%)
gha (Ghana)	31	0 (0.0%)	0 (0.0%)	31 (100.0%)	0 (0.0%)	3	0 (0.0%)
hnd (Honduras)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
hrv (Croatia)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
hun (Hungary)	29	0 (0.0%)	11 (37.9%)	18 (62.1%)	0 (0.0%)	9	0 (0.0%)
imn (Isle of Man)	5	0 (0.0%)	0 (0.0%)	5 (100.0%)	0 (0.0%)	2	0 (0.0%)
irl (Ireland)	68	0 (0.0%)	16 (23.5%)	52 (76.5%)	0 (0.0%)	16	0 (0.0%)
irq (Iraq)	6	0 (0.0%)	0 (0.0%)	6 (100.0%)	0 (0.0%)	2	0 (0.0%)
isl (Iceland)	3	0 (0.0%)	1 (33.3%)	2 (66.7%)	0 (0.0%)	2	0 (0.0%)
kaz (Kazakhstan)	12	0 (0.0%)	2 (16.7%)	10 (83.3%)	0 (0.0%)	5	0 (0.0%)
kgz (Kyrgyz Republic (Kyrgyzstan))	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
khm (Cambodia, Kingdom of)	8	0 (0.0%)	0 (0.0%)	8 (100.0%)	0 (0.0%)	6	0 (0.0%)
kor (South Korea)	78	0 (0.0%)	40 (51.3%)	38 (48.7%)	0 (0.0%)	11	0 (0.0%)
lby (Libya)	4	0 (0.0%)	0 (0.0%)	4 (100.0%)	0 (0.0%)	2	0 (0.0%)
lca (Saint Lucia)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
lie (Liechtenstein)	2	0 (0.0%)	2 (100.0%)	0 (0.0%)	0 (0.0%)	2	0 (0.0%)
lka (Sri Lanka)	42	0 (0.0%)	4 (9.5%)	38 (90.5%)	0 (0.0%)	3	0 (0.0%)
ltu (Lithuania)	24	0 (0.0%)	2 (8.3%)	22 (91.7%)	0 (0.0%)	5	0 (0.0%)
lva (Latvia)	4	0 (0.0%)	3 (75.0%)	1 (25.0%)	0 (0.0%)	2	0 (0.0%)
mli (Mali)	2	0 (0.0%)	2 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)
mlt (Malta)	3	0 (0.0%)	0 (0.0%)	3 (100.0%)	0 (0.0%)	2	0 (0.0%)
mmr (Myanmar)	10	0 (0.0%)	0 (0.0%)	10 (100.0%)	0 (0.0%)	4	0 (0.0%)
mng (Mongolia)	2	0 (0.0%)	0 (0.0%)	2 (100.0%)	0 (0.0%)	2	0 (0.0%)
moz (Mozambique)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
mrt (Mauritania)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
mwi (Malawi)	16	0 (0.0%)	3 (18.8%)	13 (81.3%)	0 (0.0%)	3	0 (0.0%)
mys (Malaysia)	6	0 (0.0%)	2 (33.3%)	4 (66.7%)	0 (0.0%)	4	0 (0.0%)
nam (Namibia)	4	0 (0.0%)	1 (25.0%)	3 (75.0%)	0 (0.0%)	1	0 (0.0%)
nga (Nigeria)	22	0 (0.0%)	2 (9.1%)	20 (90.9%)	0 (0.0%)	5	0 (0.0%)
nor (Norway)	34	0 (0.0%)	14 (41.2%)	20 (58.8%)	0 (0.0%)	10	0 (0.0%)
nzl (New Zealand)	59	0 (0.0%)	9 (15.3%)	50 (84.7%)	0 (0.0%)	10	0 (0.0%)
omn (Oman)	11	0 (0.0%)	0 (0.0%)	11 (100.0%)	0 (0.0%)	2	0 (0.0%)
pri (Puerto Rico)	6	0 (0.0%)	3 (50.0%)	3 (50.0%)	0 (0.0%)	3	0 (0.0%)
pse (Palestinian Territory, Occupied)	34	0 (0.0%)	0 (0.0%)	34 (100.0%)	0 (0.0%)	1	0 (0.0%)
qat (Qatar)	5	0 (0.0%)	0 (0.0%)	5 (100.0%)	0 (0.0%)	1	0 (0.0%)
reu (Reunion [French])	6	0 (0.0%)	1 (16.7%)	5 (83.3%)	0 (0.0%)	4	0 (0.0%)
sgp (Singapore)	33	0 (0.0%)	10 (30.3%)	23 (69.7%)	0 (0.0%)	16	0 (0.0%)
som (Somalia)	12	0 (0.0%)	0 (0.0%)	12 (100.0%)	0 (0.0%)	6	0 (0.0%)
svk (Slovak Republic)	12	0 (0.0%)	1 (8.3%)	11 (91.7%)	0 (0.0%)	7	0 (0.0%)
svn (Slovenia)	24	0 (0.0%)	1 (4.2%)	23 (95.8%)	0 (0.0%)	7	0 (0.0%)
syc (Seychelles)	2	0 (0.0%)	1 (50.0%)	1 (50.0%)	0 (0.0%)	2	0 (0.0%)
syr (Syria)	15	0 (0.0%)	0 (0.0%)	15 (100.0%)	0 (0.0%)	1	0 (0.0%)
tcd (Chad)	7	0 (0.0%)	4 (57.1%)	2 (28.6%)	1 (14.3%)	2	1 (50.0%)
tto (Trinidad and Tobago)	1	0 (0.0%)	0 (0.0%)	1 (100.0%)	0 (0.0%)	1	0 (0.0%)
uzb (Uzbekistan)	21	0 (0.0%)	0 (0.0%)	21 (100.0%)	0 (0.0%)	4	0 (0.0%)
vut (Vanuatu)	1	0 (0.0%)	1 (100.0%)	0 (0.0%)	0 (0.0%)	1	0 (0.0%)