IPv4 R&E Routing Table Report 23:05 GMT Sat 06 Dec, 2025 IPv4 BGP Table (Global) as seen at Singapore. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Singapore/ Analysis Summary ---------------- BGP routing table entries examined: 1016190 Prefixes after maximum aggregation (per Origin AS): 393087 Deaggregation factor: 2.59 Unique aggregates announced (without unneeded subnets): 504007 Number of IPv4 prefixes with a valid ROA: 597210 Number of IPv4 prefixes with an invalid ROA: 664 Number of IPv4 prefixes with no ROA: 418316 Total ASes present in the Internet Routing Table: 77509 Prefixes per ASN: 13.11 Origin-only ASes present in the Internet Routing Table: 66442 Origin ASes announcing only one prefix: 27091 Transit ASes present in the Internet Routing Table: 11067 Transit-only ASes present in the Internet Routing Table: 550 Paths with bogon ASNs present in the IPv4 Routing Table: 20 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 967 Number of instances of unregistered ASNs: 996 Number of 32-bit ASNs allocated by the RIRs: 48158 Number of 32-bit ASNs visible in the Routing Table: 39400 Prefixes from 32-bit ASNs in the Routing Table: 217760 Number of bogon 32-bit ASNs visible in the Routing Table: 72 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 439 Number of addresses announced to Internet: 3099838720 Equivalent to 184 /8s, 195 /16s and 201 /24s Percentage of available address space announced: 83.7 Percentage of allocated address space announced: 83.7 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 332521 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 274873 Total APNIC prefixes after maximum aggregation: 80652 APNIC Deaggregation factor: 3.41 Prefixes being announced from the APNIC address blocks: 262404 Unique aggregates announced from the APNIC address blocks: 106124 APNIC Region origin ASes present in the Internet Routing Table: 14876 APNIC Prefixes per ASN: 17.64 APNIC Region origin ASes announcing only one prefix: 4517 APNIC Region transit ASes present in the Internet Routing Table: 1998 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10460 Number of APNIC addresses announced to Internet: 752850944 Equivalent to 44 /8s, 223 /16s and 152 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-155961 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 297397 Total ARIN prefixes after maximum aggregation: 134286 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 297135 Unique aggregates announced from the ARIN address blocks: 145649 ARIN Region origin ASes present in the Internet Routing Table: 19353 ARIN Prefixes per ASN: 15.35 ARIN Region origin ASes announcing only one prefix: 7100 ARIN Region transit ASes present in the Internet Routing Table: 1921 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5420 Number of ARIN addresses announced to Internet: 1337332992 Equivalent to 79 /8s, 182 /16s and 21 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-402332 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 281789 Total RIPE prefixes after maximum aggregation: 139816 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 282783 Unique aggregates announced from the RIPE address blocks: 183703 RIPE Region origin ASes present in the Internet Routing Table: 29102 RIPE Prefixes per ASN: 9.72 RIPE Region origin ASes announcing only one prefix: 12071 RIPE Region transit ASes present in the Internet Routing Table: 4049 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 34 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12850 Number of RIPE addresses announced to Internet: 735656704 Equivalent to 43 /8s, 217 /16s and 59 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 125547 Total LACNIC prefixes after maximum aggregation: 30808 LACNIC Deaggregation factor: 4.08 Prefixes being announced from the LACNIC address blocks: 121512 Unique aggregates announced from the LACNIC address blocks: 49719 LACNIC Region origin ASes present in the Internet Routing Table: 11324 LACNIC Prefixes per ASN: 10.73 LACNIC Region origin ASes announcing only one prefix: 2674 LACNIC Region transit ASes present in the Internet Routing Table: 2538 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 68 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9316 Number of LACNIC addresses announced to Internet: 170682880 Equivalent to 10 /8s, 44 /16s and 106 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 35617 Total AfriNIC prefixes after maximum aggregation: 6871 AfriNIC Deaggregation factor: 5.18 Prefixes being announced from the AfriNIC address blocks: 51917 Unique aggregates announced from the AfriNIC address blocks: 18435 AfriNIC Region origin ASes present in the Internet Routing Table: 1992 AfriNIC Prefixes per ASN: 26.06 AfriNIC Region origin ASes announcing only one prefix: 729 AfriNIC Region transit ASes present in the Internet Routing Table: 378 Average AfriNIC Region AS path length visible: 5.3 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1354 Number of AfriNIC addresses announced to Internet: 103151360 Equivalent to 6 /8s, 37 /16s and 247 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 13288 8729 120 CHINAMOBILE-CN China Mobile Communication 7545 6046 835 591 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4599 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4408 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 4012 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3709 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3341 828 182 CMNET-JIANGSU-AP China Mobile communicati 45899 3321 1869 100 VNPT-AS-VN VNPT Corp, VN 24560 2952 864 504 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2511 274 1936 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14274 37209 5402 AMAZON-02, US 22773 4777 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3315 4862 489 GOOGLE-CLOUD-PLATFORM, US 749 3208 54760 2459 DNIC-AS-00749, US 16625 2874 1231 2152 AKAMAI-AS, US 36352 2824 231 908 AS-COLOCROSSING, US 174 2703 8768 851 COGENT-174, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7287 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 3990 375 2286 M247, RO 20940 3856 3394 124 AKAMAI-ASN1, NL 12389 3150 2317 869 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2540 180 1840 CDNEXT, GB 34984 2423 363 575 TELLCOM-AS, TR 8452 1669 1852 14 TE-AS TE-AS, EG 203020 1613 241 784 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12654 3291 585 UNINET, MX 10620 3457 463 1100 Telmex Colombia S.A., CO 13999 2508 509 352 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1373 2431 267 Claro NXT Telecomunicacoes Ltda, BR 3816 1347 779 211 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1262 371 22 Telefonica del Peru S.A.A., PE 22884 1056 67 358 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1016 2486 56 TIM SA, BR 18881 901 1127 31 TELEFONICA BRASIL S.A, BR Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1924 368 14 RAYA-AS, EG 36992 1683 1509 399 ETISALAT-MISR, EG 24863 1261 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 37069 1093 1096 13 MOBINIL, EG 29571 1072 94 22 ORANGE-COTE-IVOIRE, CI 36935 1036 519 30 Vodafone-, EG 20011 580 154 212 NTT-DATA-Inc, ZA 36914 565 82 3 KENET-AS, KE 15399 551 57 56 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14274 37209 5402 AMAZON-02, US 9808 13288 8729 120 CHINAMOBILE-CN China Mobile Communication 8151 12654 3291 585 UNINET, MX 12479 7287 1711 149 UNI2-AS, ES 7545 6046 835 591 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 22773 4777 3100 367 ASN-CXA-ALL-CCI-22773-RDC, US 11492 4715 313 913 CABLEONE, US 9498 4599 541 336 BBIL-AP BHARTI Airtel Ltd., IN 18403 4408 347 24 FPT-AS-AP FPT Telecom Company, VN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13288 13168 CHINAMOBILE-CN China Mobile Communications Grou 8151 12654 12069 UNINET, MX 12479 7287 7138 UNI2-AS, ES 7545 6046 5455 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 22773 4777 4410 ASN-CXA-ALL-CCI-22773-RDC, US 18403 4408 4384 FPT-AS-AP FPT Telecom Company, VN 9498 4599 4263 BBIL-AP BHARTI Airtel Ltd., IN 7552 4012 3984 VIETEL-AS-AP Viettel Group, VN 11492 4715 3802 CABLEONE, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, US 23.137.48.0/24 Origin: 16904 ARVIG-16904, US 23.137.48.0/24 Transit: 174 COGENT-174, US 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 174 COGENT-174, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:41 /11:94 /12:298 /13:578 /14:1197 /15:2089 /16:13645 /17:8159 /18:13412 /19:24669 /20:44485 /21:51901 /22:112733 /23:104966 /24:637893 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8151 6854 12654 UNINET, MX 12479 6217 7287 UNI2-AS, ES 11492 3559 4715 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 3047 4777 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2435 14274 AMAZON-02, US 30036 2318 2661 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2212 3457 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2446 2:1534 3:977 4:10 5:4938 6:190 7:6 8:1500 9:6 11:172 12:1230 13:571 14:2604 15:414 16:303 17:388 18:913 20:587 21:4 22:188 23:8067 24:2562 25:2 27:2791 29:19 31:3392 32:31 33:1 34:84 35:285 36:4603 37:4545 38:9381 39:1193 40:446 41:4438 42:1945 43:2880 44:399 45:19504 46:5089 47:386 49:2150 50:2051 51:597 52:1567 54:289 55:1102 56:11 57:301 58:2315 59:1329 60:1167 61:3092 62:3086 63:1737 64:5960 65:2122 66:5890 67:3230 68:1496 69:4172 70:1029 71:618 72:3048 74:2924 75:1517 76:600 77:2771 78:1911 79:1780 80:2303 81:2096 82:3823 83:1454 84:2027 85:3641 86:1102 87:2159 88:1346 89:4561 90:840 91:8423 92:2848 93:3012 94:4221 95:4555 96:1444 97:311 98:951 99:775 100:68 101:1354 102:4324 103:32674 104:5496 105:771 106:912 107:2807 108:1198 109:4211 110:2305 111:3917 112:2791 113:1929 114:2097 115:2264 116:2174 117:3136 118:3007 119:2088 120:2377 121:1499 122:2943 123:2278 124:1654 125:2932 126:125 128:1578 129:957 130:1500 131:2258 132:763 133:462 134:1629 135:493 136:1472 137:1142 138:2913 139:1589 140:1722 141:1549 142:2341 143:2132 144:1349 145:629 146:2178 147:2135 148:2789 149:2884 150:1317 151:2618 152:2274 153:767 154:9156 155:2254 156:4234 157:2240 158:1471 159:2691 160:3654 161:1991 162:4001 163:2316 164:1965 165:2621 166:1308 167:2150 168:3912 169:795 170:5436 171:1114 172:4504 173:3422 174:908 175:1353 176:3777 177:4736 178:4293 179:2291 180:2977 181:4345 182:3836 183:2618 184:2050 185:21649 186:5519 187:4783 188:4428 189:4503 190:9692 191:1563 192:11411 193:9497 194:7846 195:5617 196:3283 197:3304 198:6041 199:6089 200:8066 201:6388 202:10438 203:10518 204:4604 205:3668 206:4351 207:3772 208:4260 209:5386 210:4713 211:2680 212:4879 213:4002 214:1021 215:53 216:7069 217:3387 218:1591 219:406 220:2190 221:1285 222:775 223:3198 End of report