[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Fri Nov 22 20:10:38 UTC 2024
IPv4 R&E Routing Table Report 20:10 GMT Fri 22 Nov, 2024
IPv4 BGP Table (R&E) as seen at CERNET.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/CERNET/
Analysis Summary
----------------
BGP routing table entries examined: 17585
Prefixes after maximum aggregation (per Origin AS): 9959
Deaggregation factor: 1.77
Unique aggregates announced (without unneeded subnets): 11120
Number of IPv4 prefixes with a valid ROA: 7257
Number of IPv4 prefixes with an invalid ROA: 7
Number of IPv4 prefixes with no ROA: 10321
Total ASes present in the Internet Routing Table: 2648
Prefixes per ASN: 6.64
Origin-only ASes present in the Internet Routing Table: 2289
Origin ASes announcing only one prefix: 1020
Transit ASes present in the Internet Routing Table: 359
Transit-only ASes present in the Internet Routing Table: 63
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 28
Max AS path prepend of ASN (138136) 20
Prefixes from unregistered ASNs in the Routing Table: 1
Number of instances of unregistered ASNs: 1
Number of 32-bit ASNs allocated by the RIRs: 45863
Number of 32-bit ASNs visible in the Routing Table: 629
Prefixes from 32-bit ASNs in the Routing Table: 1686
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 3
Number of addresses announced to Internet: 192695472
Equivalent to 11 /8s, 124 /16s and 76 /24s
Percentage of available address space announced: 5.2
Percentage of allocated address space announced: 5.2
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: 2214
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 3920
Total APNIC prefixes after maximum aggregation: 2119
APNIC Deaggregation factor: 1.85
Prefixes being announced from the APNIC address blocks: 3918
Unique aggregates announced from the APNIC address blocks: 2544
APNIC Region origin ASes present in the Internet Routing Table: 543
APNIC Prefixes per ASN: 7.22
APNIC Region origin ASes announcing only one prefix: 236
APNIC Region transit ASes present in the Internet Routing Table: 54
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 28
Number of APNIC region 32-bit ASNs visible in the Routing Table: 202
Number of APNIC addresses announced to Internet: 44714752
Equivalent to 2 /8s, 170 /16s and 75 /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, 131072-153913
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: 7627
Total ARIN prefixes after maximum aggregation: 4296
ARIN Deaggregation factor: 1.78
Prefixes being announced from the ARIN address blocks: 7643
Unique aggregates announced from the ARIN address blocks: 4766
ARIN Region origin ASes present in the Internet Routing Table: 1198
ARIN Prefixes per ASN: 6.38
ARIN Region origin ASes announcing only one prefix: 425
ARIN Region transit ASes present in the Internet Routing Table: 148
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN region 32-bit ASNs visible in the Routing Table: 202
Number of ARIN addresses announced to Internet: 82900512
Equivalent to 4 /8s, 240 /16s and 246 /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: 3564
Total RIPE prefixes after maximum aggregation: 2861
RIPE Deaggregation factor: 1.25
Prefixes being announced from the RIPE address blocks: 3552
Unique aggregates announced from the RIPE address blocks: 2898
RIPE Region origin ASes present in the Internet Routing Table: 663
RIPE Prefixes per ASN: 5.36
RIPE Region origin ASes announcing only one prefix: 294
RIPE Region transit ASes present in the Internet Routing Table: 106
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 13
Number of RIPE region 32-bit ASNs visible in the Routing Table: 155
Number of RIPE addresses announced to Internet: 58594192
Equivalent to 3 /8s, 126 /16s and 19 /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: 1384
Total LACNIC prefixes after maximum aggregation: 541
LACNIC Deaggregation factor: 2.56
Prefixes being announced from the LACNIC address blocks: 1380
Unique aggregates announced from the LACNIC address blocks: 725
LACNIC Region origin ASes present in the Internet Routing Table: 156
LACNIC Prefixes per ASN: 8.85
LACNIC Region origin ASes announcing only one prefix: 54
LACNIC Region transit ASes present in the Internet Routing Table: 23
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 14
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 63
Number of LACNIC addresses announced to Internet: 4198656
Equivalent to 0 /8s, 64 /16s and 17 /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: 1089
Total AfriNIC prefixes after maximum aggregation: 141
AfriNIC Deaggregation factor: 7.72
Prefixes being announced from the AfriNIC address blocks: 1089
Unique aggregates announced from the AfriNIC address blocks: 184
AfriNIC Region origin ASes present in the Internet Routing Table: 24
AfriNIC Prefixes per ASN: 45.38
AfriNIC Region origin ASes announcing only one prefix: 11
AfriNIC Region transit ASes present in the Internet Routing Table: 8
Average AfriNIC Region AS path length visible: 3.6
Max AfriNIC Region AS path length visible: 6
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 7
Number of AfriNIC addresses announced to Internet: 2286592
Equivalent to 0 /8s, 34 /16s and 228 /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
2907 590 2170 464 SINET-AS Research Organization of Informa
1237 191 74 145 KREONET-AS-KR KISTI, KR
58647 181 18 2 KAGAWAU-AS Kagawa University, JP
7575 171 313 114 AARNET-AS-AP Australian Academic and Rese
55824 131 18 18 NKN-CORE-NW NKN Core Network, IN
4538 113 4176 70 ERX-CERNET-BKB China Education and Resear
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 69 37 10 UNINET-AS-AP UNINET-, TH
2697 59 4 34 ERX-ERNET-AS Education and Research Netwo
23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
376 201 162 150 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
2920 175 34 7 LACOE, US
2152 150 507 97 CENIC-2152, US
18558 140 18 4 NETBLK-RCOEK, US
81 134 517 33 NCREN, US
23024 95 7 21 OCDE, US
21976 91 50 17 NJEDGE-NET, US
237 82 541 48 MERIT-AS-14, US
1736 79 16 1 MU-AS, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 283 1899 249 DFN Verein zur Foerderung eines Deutschen
786 186 1767 183 JANET Jisc Services Limited, GB
8895 131 24 5 ISU Internet Services Unit ISU, SA
559 114 533 104 SWITCH Peering requests: peering at switch.c
1103 96 1743 83 SURFNET-NL SURFnet, The Netherlands, NL
2614 93 26 73 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
553 78 462 78 BELWUE BelWue-Koordination, DE
3267 76 26 66 NIKS, RU
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 217 178 42 Rede Nacional de Ensino e Pesquisa, BR
28391 154 10 68 Universidad Juarez Autonoma de Tabasco, M
11340 110 25 53 Red Universitaria Nacional, CL
61468 51 5 17 CEDIA, EC
2715 49 99 35 Fundacao Carlos Chagas Filho de Amparo a
4270 48 16 2 Red de Interconexion Universitaria, AR
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
3596 40 8 4 Universidad Autonoma Metropolitana, MX
28614 38 2 2 Fundacao Universidade Regional de Blumena
1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 545 82 3 KENET-AS, KE
2018 380 319 71 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37215 32 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
327700 15 16 1 MoRENet, MZ
37501 11 49 6 UOFS, ZA
36982 8 33 8 UCT, ZA
37654 6 0 5 RwEdNet-AS, RW
37520 3 16 3 Rhodes-Univ, ZA
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 590 2170 464 SINET-AS Research Organization of Informa
36914 545 82 3 KENET-AS, KE
2018 380 319 71 TENET-1, ZA
680 283 1899 249 DFN Verein zur Foerderung eines Deutschen
1916 217 178 42 Rede Nacional de Ensino e Pesquisa, BR
376 201 162 150 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
1237 191 74 145 KREONET-AS-KR KISTI, KR
786 186 1767 183 JANET Jisc Services Limited, GB
58647 181 18 2 KAGAWAU-AS Kagawa University, JP
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 545 542 KENET-AS, KE
2018 380 309 TENET-1, ZA
5786 198 197 UPRENET, PR
58647 181 179 KAGAWAU-AS Kagawa University, JP
1916 217 175 Rede Nacional de Ensino e Pesquisa, BR
2920 175 168 LACOE, US
18558 140 136 NETBLK-RCOEK, US
8895 131 126 ISU Internet Services Unit ISU, SA
55824 131 113 NKN-CORE-NW NKN Core Network, IN
81 134 101 NCREN, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
202.14.117.0/24 Origin: 17827 STOU-AS-TH Sukhothai Thammathirat Open U
202.14.117.0/24 Transit: 4621 UNINET-AS-AP UNINET-, TH
202.46.245.0/24 Origin: 147171 IDNIC-BRIN-AS-ID Badan Riset dan Inovasi
202.46.245.0/24 Transit: 64302 IDNIC-IDREN-AS-ID IDREN - Indonesia Rese
203.9.156.0/24 Origin: 1851 ADELAIDE-UNIVERSITY-AS-AP The University
203.9.156.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res
Complete listing at https://bgp.nsrc.org/REN/CERNET/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 /8:0 /9:1 /10:1 /11:1 /12:11
/13:18 /14:31 /15:113 /16:1901 /17:413 /18:441
/19:535 /20:770 /21:790 /22:1338 /23:1361 /24:9797
/25:22 /26:17 /27:23 /28:1 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 521 545 KENET-AS, KE
8895 126 131 ISU Internet Services Unit ISU, SA
23024 37 95 OCDE, US
32440 37 63 LONI, US
3267 34 76 NIKS, RU
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
200521 31 53 SEAP-AGE, ES
25977 30 44 HCCS, US
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 5:15 8:2 12:2 14:92 23:6
24:3 31:1 35:3 37:8 38:11 40:1
41:225 42:1 44:5 45:44 46:4 47:1
49:10 50:2 52:1 59:2 61:3 62:7
63:32 64:42 65:5 66:42 67:40 68:12
69:19 70:2 71:1 72:7 74:53 76:41
77:10 78:3 79:10 80:12 81:25 82:7
83:7 84:8 85:45 86:5 87:1 89:11
91:41 92:2 93:13 94:2 95:2 96:5
97:1 98:2 102:2 103:289 104:78 108:8
109:4 111:20 113:2 114:24 116:9 117:61
118:1 119:1 121:18 122:8 123:8 125:2
128:56 129:36 130:96 131:63 132:65 133:154
134:103 136:198 137:51 138:58 139:5 140:32
141:3 142:53 143:26 144:24 145:2 146:137
147:60 148:195 149:12 150:40 151:9 152:139
153:14 154:31 155:63 156:133 157:27 158:30
159:19 160:31 161:16 162:21 163:60 164:11
165:47 166:1 167:10 168:120 169:7 170:90
171:1 172:2 173:7 175:16 177:6 179:13
180:15 181:1 182:11 184:4 185:48 186:3
187:21 188:13 189:2 190:18 191:13 192:1297
193:270 194:137 195:73 196:145 197:329 198:425
199:238 200:270 201:37 202:574 203:439 204:363
205:131 206:207 207:221 208:65 209:104 210:139
211:3 212:164 213:6 216:89 217:9 218:2
219:6 220:17 222:1
End of report
More information about the ren-bgp-stats-all
mailing list