[REN-BGP-stats-all] IPv4 R&E Routing Table Report - PERN (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Thu Feb 6 19:10:42 UTC 2025
IPv4 R&E Routing Table Report 19:10 GMT Thu 06 Feb, 2025
IPv4 BGP Table (R&E) as seen at PERN.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/PERN/
Analysis Summary
----------------
BGP routing table entries examined: 4432
Prefixes after maximum aggregation (per Origin AS): 2242
Deaggregation factor: 1.98
Unique aggregates announced (without unneeded subnets): 2547
Number of IPv4 prefixes with a valid ROA: 1688
Number of IPv4 prefixes with an invalid ROA: 4
Number of IPv4 prefixes with no ROA: 2740
Total ASes present in the Internet Routing Table: 483
Prefixes per ASN: 9.18
Origin-only ASes present in the Internet Routing Table: 334
Origin ASes announcing only one prefix: 112
Transit ASes present in the Internet Routing Table: 149
Transit-only ASes present in the Internet Routing Table: 90
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 6.3
Max AS path length visible: 16
Max AS path prepend of ASN ( 45768) 8
Prefixes from unregistered ASNs in the Routing Table: 0
Number of instances of unregistered ASNs: 0
Number of 32-bit ASNs allocated by the RIRs: 46102
Number of 32-bit ASNs visible in the Routing Table: 82
Prefixes from 32-bit ASNs in the Routing Table: 163
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: 1
Number of addresses announced to Internet: 69237248
Equivalent to 4 /8s, 32 /16s and 122 /24s
Percentage of available address space announced: 1.9
Percentage of allocated address space announced: 1.9
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: 1119
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 913
Total APNIC prefixes after maximum aggregation: 211
APNIC Deaggregation factor: 4.33
Prefixes being announced from the APNIC address blocks: 912
Unique aggregates announced from the APNIC address blocks: 216
APNIC Region origin ASes present in the Internet Routing Table: 30
APNIC Prefixes per ASN: 30.40
APNIC Region origin ASes announcing only one prefix: 6
APNIC Region transit ASes present in the Internet Routing Table: 17
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 11
Number of APNIC region 32-bit ASNs visible in the Routing Table: 4
Number of APNIC addresses announced to Internet: 18232576
Equivalent to 1 /8s, 22 /16s and 53 /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: 1809
Total ARIN prefixes after maximum aggregation: 1063
ARIN Deaggregation factor: 1.70
Prefixes being announced from the ARIN address blocks: 1820
Unique aggregates announced from the ARIN address blocks: 1272
ARIN Region origin ASes present in the Internet Routing Table: 242
ARIN Prefixes per ASN: 7.52
ARIN Region origin ASes announcing only one prefix: 64
ARIN Region transit ASes present in the Internet Routing Table: 65
Average ARIN Region AS path length visible: 7.8
Max ARIN Region AS path length visible: 13
Number of ARIN region 32-bit ASNs visible in the Routing Table: 45
Number of ARIN addresses announced to Internet: 30662656
Equivalent to 1 /8s, 211 /16s and 224 /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: 1049
Total RIPE prefixes after maximum aggregation: 860
RIPE Deaggregation factor: 1.22
Prefixes being announced from the RIPE address blocks: 1038
Unique aggregates announced from the RIPE address blocks: 934
RIPE Region origin ASes present in the Internet Routing Table: 96
RIPE Prefixes per ASN: 10.81
RIPE Region origin ASes announcing only one prefix: 30
RIPE Region transit ASes present in the Internet Routing Table: 38
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 11
Number of RIPE region 32-bit ASNs visible in the Routing Table: 17
Number of RIPE addresses announced to Internet: 18856192
Equivalent to 1 /8s, 31 /16s and 185 /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: 76
Total LACNIC prefixes after maximum aggregation: 33
LACNIC Deaggregation factor: 2.30
Prefixes being announced from the LACNIC address blocks: 76
Unique aggregates announced from the LACNIC address blocks: 40
LACNIC Region origin ASes present in the Internet Routing Table: 14
LACNIC Prefixes per ASN: 5.43
LACNIC Region origin ASes announcing only one prefix: 7
LACNIC Region transit ASes present in the Internet Routing Table: 6
Average LACNIC Region AS path length visible: 6.9
Max LACNIC Region AS path length visible: 16
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 12
Number of LACNIC addresses announced to Internet: 36608
Equivalent to 0 /8s, 0 /16s and 143 /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: 585
Total AfriNIC prefixes after maximum aggregation: 75
AfriNIC Deaggregation factor: 7.80
Prefixes being announced from the AfriNIC address blocks: 585
Unique aggregates announced from the AfriNIC address blocks: 84
AfriNIC Region origin ASes present in the Internet Routing Table: 11
AfriNIC Prefixes per ASN: 53.18
AfriNIC Region origin ASes announcing only one prefix: 5
AfriNIC Region transit ASes present in the Internet Routing Table: 4
Average AfriNIC Region AS path length visible: 5.4
Max AfriNIC Region AS path length visible: 16
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 1448960
Equivalent to 0 /8s, 22 /16s and 28 /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
7497 435 177 19 CSTNET-AS-AP Computer Network Information
4538 118 4144 69 ERX-CERNET-BKB China Education and Resear
55824 107 16 4 NKN-CORE-NW NKN Core Network, IN
38280 50 3 2 MONASHUNI-MY-AS-AP Monash University Sunw
24151 30 2 12 CNNIC-CRITICAL-AP China Internet Network
9270 18 5 6 APAN-KR-AS National Infomation Society Ag
24364 18 176 8 CNGI-SH-IX-AS-AP CERNET2 IX at Shanghai J
7560 17 1 9 CHONBUK-AS Jeonbuk National University, K
18422 16 17 2 ITRINET-AS-TW Industrial Technology Resea
24348 16 98 12 CNGI-BJ-IX2-AS-AP CERNET2 IX at Tsinghua
Complete listing at https://bgp.nsrc.org/REN/PERN/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2152 238 491 95 CENIC-2152, US
237 79 509 45 MERIT-AS-14, US
7939 61 16 10 UNIVCENTFLA, US
22742 59 37 26 CT-EDU-NET, US
6325 54 168 11 ILLINOIS-CENTURY, US
32440 52 19 23 LONI, US
27609 45 5 21 USC-UNIVERSITY-HOSPITAL, US
25977 44 10 15 HCCS, US
611 38 84 24 NECN-1-611, CA
1767 36 42 12 ILIGHT-NET, US
Complete listing at https://bgp.nsrc.org/REN/PERN/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 243 1497 216 DFN Verein zur Foerderung eines Deutschen
786 151 1067 136 JANET Jisc Services Limited, GB
2614 88 26 71 ROEDUNET, RO
3267 73 29 68 NIKS, RU
3218 39 3 24 COSMOS-3218-AS AS-COSMOS root, RU
5408 33 51 17 GR-NET www.grnet.gr, GR
2611 29 179 28 BELNET, BE
47623 22 1 4 IIAP-ASNET-AS, AM
60187 20 4 5 LGFL-AS, GB
1653 19 137 18 SUNET SUNET Swedish University Network, E
Complete listing at https://bgp.nsrc.org/REN/PERN/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
61468 49 5 16 CEDIA, EC
269224 7 0 1 Universidade La Salle, BR
268334 3 0 2 Fundacao Universidade Alto Vale do Rio do
268744 3 2 3 APESC - Associacao Pro-Ensino em Santa Cr
269825 3 0 1 UNIVERSIDAD DE LAS AMERICAS, EC
268118 2 1 2 UNIVERSIDADE FEDERAL DE SANTA MARIA, BR
268839 2 0 1 Associacao Pro Ensino Superior em Novo Ha
22724 1 0 1 PUNTONET S.A., EC
265884 1 0 1 CONSEJO NACIONAL DE INVESTIGACIONES CIENT
267630 1 0 1 UNIVERSIDADE ESTADUAL DO MARANHAO, BR
Complete listing at https://bgp.nsrc.org/REN/PERN/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 323 82 3 KENET-AS, KE
2018 175 219 62 TENET-1, ZA
37182 36 8 1 TERNET, TZ
37215 34 8 1 MAREN, MW
327700 10 16 1 MoRENet, MZ
22354 2 3 2 UNIV-DAR, TZ
37010 1 0 1 National-University-Rwanda, RW
37263 1 1 1 UNIVEDU, GH
37717 1 16 1 EL-Khawarizmi, TN
328076 1 1 1 University-of-Mines-and-Technology, GH
Complete listing at https://bgp.nsrc.org/REN/PERN/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
7497 435 177 19 CSTNET-AS-AP Computer Network Information
36914 323 82 3 KENET-AS, KE
680 243 1497 216 DFN Verein zur Foerderung eines Deutschen
2152 238 491 95 CENIC-2152, US
2018 175 219 62 TENET-1, ZA
786 151 1067 136 JANET Jisc Services Limited, GB
4538 118 4144 69 ERX-CERNET-BKB China Education and Resear
55824 107 16 4 NKN-CORE-NW NKN Core Network, IN
2614 88 26 71 ROEDUNET, RO
237 79 509 45 MERIT-AS-14, US
Complete listing at https://bgp.nsrc.org/REN/PERN/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 323 320 KENET-AS, KE
2152 238 143 CENIC-2152, US
2018 175 113 TENET-1, ZA
55824 107 103 NKN-CORE-NW NKN Core Network, IN
7939 61 51 UNIVCENTFLA, US
4538 118 49 ERX-CERNET-BKB China Education and Research Net
38280 50 48 MONASHUNI-MY-AS-AP Monash University Sunway Cam
6325 54 43 ILLINOIS-CENTURY, US
37182 36 35 TERNET, TZ
237 79 34 MERIT-AS-14, US
Complete listing at https://bgp.nsrc.org/REN/PERN/data-CIDRnet
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
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/PERN/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 /11:0 /12:8
/13:13 /14:20 /15:64 /16:464 /17:93 /18:96
/19:154 /20:183 /21:193 /22:358 /23:382 /24:2402
/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
36914 302 323 KENET-AS, KE
37182 35 36 TERNET, TZ
3267 32 73 NIKS, RU
46115 32 33 LUTHER, US
25977 30 44 HCCS, US
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
32440 29 52 LONI, US
37215 28 34 MAREN, MW
61468 23 49 CEDIA, EC
1968 21 23 UMASSNET-AS1968, US
Complete listing at https://bgp.nsrc.org/REN/PERN/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
5:15 6:4 8:2 12:1 14:93 23:9
24:3 31:1 35:3 37:8 38:11 40:1
41:255 42:11 44:4 45:51 46:4 47:1
49:7 50:4 52:1 59:19 60:6 61:3
62:8 63:36 64:45 65:5 66:57 67:41
68:13 69:18 70:2 71:1 72:8 74:55
76:38 77:10 78:3 79:10 80:14 81:3
82:1 83:3 85:17 86:2 89:1 91:1
93:7 94:2 95:1 103:6 104:10 107:2
108:4 114:7 116:4 118:32 119:21 124:42
125:5 129:5 130:14 131:3 132:39 134:7
136:1 137:16 138:1 141:3 142:5 143:5
144:3 146:11 147:2 149:1 152:10 156:1
159:95 160:2 161:2 162:7 163:9 164:2
168:45 169:1 170:7 173:5 180:1 185:9
187:3 188:3 190:16 192:283 193:131 194:30
195:3 196:16 197:111 198:113 199:48 200:2
201:4 202:36 203:14 204:20 205:11 206:13
207:51 208:9 209:10 210:74 213:1 216:5
217:2 218:21 220:4 223:4
End of report
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